Re: Fix Linux Login Loop

2021-12-07 Thread Andrew C Aitchison
are likely to be towards the bottom of these files. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: nxserver: no access to display X via network "-nolisten tcp"

2021-11-14 Thread Andrew C Aitchison
t nx with "-nolisten tcp" although its not commented in in node.conf? tia Ekkard -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: Need to add ftp to SL 6 machine

2021-11-04 Thread Andrew C Aitchison
. Especially with a server such as vsftpd, it would be worth checking that you use the rpm with the most up to date security fixes ... -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: Fermilab/CERN recommendation for Linux distribution

2021-10-28 Thread Andrew C Aitchison
quot;the SL7 kernel". Have containers hijacked the word "kernel" to mean something like "the assumed base system including common libraries" ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

No longer Re: Fermilab/CERN recommendation for Linux distribution

2021-10-25 Thread Andrew C Aitchison
is there for you. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: google-chrome

2021-10-23 Thread Andrew C Aitchison
. IIRC I found (or built?) a copy of the missing GLIBC, hacked up an rpm which put it somewhere that the chrome binary could find it and provided what was required. Not completely straight-forward though. -- Andrew C. Aitchison Kendal, UK

RHEL4 - was Re: DHCP won't let me connect to the internet

2021-09-24 Thread Andrew C Aitchison
lacing that system will be much faster, and -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: customize Xsetup_0 , file is not executed

2021-08-03 Thread Andrew C Aitchison
On Tue, 3 Aug 2021, Ekkard Gerlach wrote: Am 03.08.21 um 13:04 schrieb Andrew C Aitchison: On Tue, 3 Aug 2021, Ekkard Gerlach wrote: Hello, /etc/X11/xdm/Xsetup_0 in�  is NOT executed, what could be the reason? I inserted on top of file echo "hello123" > /tmp/test123

Re: customize Xsetup_0 , file is not executed

2021-08-03 Thread Andrew C Aitchison
isplay :0 and display manager xdm (not gdm or kdm) ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: [SL-Users] Re: any update on CERN Linux and CentOS-8 situation?

2021-05-05 Thread Andrew C Aitchison
1cyL5RIpaIYrCn8C5x2A=XlwZHatfU9lTVBkqWjIVraTktof8jaVDXPjoOzkoFGs=mPXFT8k9V2llxcjZMZ7XqyZXftuuZCcGUUY83jAntOs= -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

c++17,17,20... - was Re: [SL-Users] Re: any update on CERN Linux and CentOS-8 situation?

2021-05-04 Thread Andrew C Aitchison
I03IJ95QWY-_DTkmqMdwOzXq8PVBkiR1dZLM= not an option ? (OK, C++20 support in g++ 10.2.1 is "experimental). -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: Code bias video, watch it ASAP

2021-04-18 Thread Andrew C Aitchison
On Sun, 18 Apr 2021, Nico Kadel-Garcia wrote: The movie is very strong on "feels", very poor indeed on data. A much better article, with far less "feels" ^^ Is that a deliberate example of the bias in the video ? -- Andrew C. Aitchison

sudo - was Re: FWIW: AlmaLinux now available.

2021-04-07 Thread Andrew C Aitchison
than sudo on SL6. By default on Ubuntu you can run succeccive sudo commands without reentering the password each time. I never figured out how to do that with SL. When I need to use pipes or redirect stdin and stdout as root, a simple "sudo bash" first solves those issues. -- Andrew C.

RHEL 9 ?

2021-01-26 Thread Andrew C Aitchison
if it never sees the light of day. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: Rhel 8

2021-01-25 Thread Andrew C Aitchison
machine-tool shop either. If D-Bus is a problem why would he want a complex system that appears to exist to allow it ? * No, I do not want a "desktop environment". My windows were either firefox or xterm's sshd into other machines - sometimes a hundred, fired up in batches of twenty. -

Re: CentOS 8 EOL; CentOS Stream?

2020-12-08 Thread Andrew C Aitchison
With my conspiracy-theory hat on, I suspect the timing of this announcement, a week after the demise of the much-loved RHEL6. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: Migrations to other linux distro

2020-11-08 Thread Andrew C Aitchison
awry. Given that a new Ubuntu LTS release comes out every two years, I was surprised to find that it dated more quickly than SL and I have found myself moving from LTS to the standard release for my home machine. Upgrade-in-place between standard releases does work. -- Andrew C. Aitchison

Re: cloning epel 6

2020-10-13 Thread Andrew C Aitchison
in case this gets routed to your junk folder. epel-de...@lists.fedoraproject.org is probably the best place to ask this. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: Recovering root password

2020-06-23 Thread Andrew C Aitchison
are setup this way, you never actually use the root password to login into root). If you remember the BIOS password, or never set one, you can boot from an install or rescue disk/memory stick, and do that "second computer" stuff without moving the disk to a

Re: After 6.10 update - SAMBA - broken

2020-06-21 Thread Andrew C Aitchison
e. Yes it will be a pain to print to file in a container window, then print the file from a host window, but there are ways around that. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Scientific Linux 6 status after November 2020

2020-06-11 Thread Andrew C Aitchison
to make the source available ...). What are the plans for SL6 after Nov 2020 ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: Mate for CentOS 8

2020-05-21 Thread Andrew C Aitchison
reason for us in the UK to want US rather than say German, is indeed the language (though I wonder whether the US will turn to Spanish ...) -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: Snaps

2020-04-25 Thread Andrew C Aitchison
of dual boot and having added a second disk my home dir was a sym-link). That struck me as a potentially significant limitation for institutional use: in my experience automounters often result in sym-linked homedirs. -- Andrew C. Aitchison

Red Hat on the Desktop - was Re: Calibre current

2020-01-30 Thread Andrew C Aitchison
ee that we would switch these users back to RHEL8 or CentOS8 now. Those thoughts were behind my somewhat inaccurate statement. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: Calibre current

2020-01-30 Thread Andrew C Aitchison
a clang compiler. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: Problems with xorg-x11-server-Xorg-1.20.4-7.el7

2019-09-27 Thread Andrew C Aitchison
g to email to the list). -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: issues with migrating to SL 7.6

2019-01-29 Thread Andrew C Aitchison
YrCn8C5x2A=AbMRfZpAeBgc2mCkl-KKhLfPwq-pKDQ3Kmztw69QJQ8=6Y0htdEMZXgU1hX9ivQzJnOY_WZIHsSGYEjzWJaki4s= suggests that that is an SL7.6 kernel. I am not so sure that my guess was right after all. What should I search/do in /boot/grub2? I'm not really sure. Many thanks, Stefano On 2019-01-29 11:42

Re: issues with migrating to SL 7.6

2019-01-29 Thread Andrew C Aitchison
n /boot /boot/grub or perhaps /boot/grup2 may give you a clue. - these directories will probably contain the new kernels, not the ones which are actually being used. You might even have a separate /boot partition, or had one before you upgraded; that could confuse both you

Re: L1TF

2018-08-15 Thread Andrew C Aitchison
=gd8BzeSQcySVxr0gDWSEbN-P-pgDXkdyCtaMqdCgPPdW1cyL5RIpaIYrCn8C5x2A=d81PuX-ca9yHRwR8_0D1PmZoObeT_rqIKdBccOzAs8Y=lZnbq0VQpWGZ8FcqImj94YtT3ayzgT7rbmgmiFxD2ZM= - when a newer version is released, that page will be updated, with a link to the new current version. -- Andrew C. Aitchison

Re: Where is CVE-2018-3665 patch for SL6?

2018-06-26 Thread Andrew C Aitchison
redhat.com/show_bug.cgi?id=CVE-2018-3665 currently depends upon six other open bugs, but I don't have access to see whether they cover RHEL6. -- Andrew C. Aitchison Cambridge, UK and...@aitchison.me.uk

Re: SL6, GTK2 and Firefox 60esr

2018-06-07 Thread Andrew C Aitchison
On Wed, 6 Jun 2018, Andrew C Aitchison wrote: Just a heads up for anyone running firefox on Scientific Linux 6 (and RHEL6 plus other clones, or other GTK2-based platforms). Red Hat Enterprise Linux 6 uses gtk2 in firefox 52.8esr, but I see from https://bugzilla.mozilla.org/show_bug.cgi?id

SL6, GTK2 and Firefox 60esr

2018-06-06 Thread Andrew C Aitchison
:-( -- Andrew C. Aitchison Cambridge, UK and...@aitchison.me.uk

Re: qt-creator

2018-05-24 Thread Andrew C Aitchison
...@lists.fedoraproject.org -- Andrew C. Aitchison Cambridge, UK and...@aitchison.me.uk

Re: Trouble with MySQL Server

2018-05-15 Thread Andrew C Aitchison
On Tue, 15 May 2018, Lofgren, Eric wrote: I’m running a SL 7 server that’s being used for a couple data projects using MySQL Server - which I confess I don’t know much about. Two have my students have both encountered errors recently, either joining tables or just restarting MySQL Server,

Re: IPv6 outbound packets filtered by default?

2018-03-21 Thread Andrew C Aitchison
the outgoing packets. When the firewall is turned on again I guess that packets continue to be sent until the system realises that they aren't being acknowledged... -- Andrew C. Aitchison Cambridge, UK and...@aitchison.me.uk

Re: iptables mac filtering: iptables fails to start after trying to use "mac" iptables module

2018-03-02 Thread Andrew C Aitchison
On Fri, 2 Mar 2018, Karel Lang AFD wrote: Hello guys, stumbled on weird thing today - wanted to setup some iptables rules based on 'mac address' and iptables failed to start. cat /etc/redhat-release Scientific Linux release 7.4 (Nitrogen) iptables --version iptables v1.4.21 yum list all |

Re: Firefox crashes start up

2017-08-20 Thread Andrew C Aitchison
n number so you would have to find those some other way. -- Andrew C Aitchison Cambridge,UK

Re: Firefox crashes start up

2017-08-19 Thread Andrew C Aitchison
On Fri, 18 Aug 2017, ToddAndMargo wrote: On 08/17/2017 01:03 PM, David Sommerseth wrote: On 17/08/17 18:33, ToddAndMargo wrote: On 08/17/2017 09:23 AM, ToddAndMargo wrote: Mozilla Firefox 55 source tarball The latest is 52 in sl-testing: firefox-52.3.0-2.el7_4.i686 : Mozilla Firefox Web

Re: Regular loss of DNS name resolution on SL7.3 machine

2017-08-18 Thread Andrew C Aitchison
On Fri, 18 Aug 2017, Dan wrote: Dear All, I wonder if anyone can help with the following strange network problem I'm having on my SL7.3 machine, please: Every day, just after midday, I suddenly lose access to DNS name resolution, and therefore become unable to interact with any remote hosts,

Re: [SCIENTIFIC-LINUX-USERS] Security ERRATA Important: jasper on SL6.x, SL7.x i386/x86_64

2017-07-26 Thread Andrew C Aitchison
On Wed, 26 Jul 2017, Pat Riehecky wrote: Not sure why they didn't make it out, should be there now. Thanks. On 07/26/2017 08:32 AM, Andrew C Aitchison wrote: On Wed, 10 May 2017, Pat Riehecky wrote: > Synopsis: Important: jasper security update > Advisory ID: SLS

Re: Security ERRATA Important: jasper on SL6.x, SL7.x i386/x86_64

2017-07-26 Thread Andrew C Aitchison
.el6_9.x86_64.rpm jasper-utils-1.900.1-21.el6_9.x86_64.rpm Thanks, -- Andrew C. Aitchison Cambridge, UK and...@aitchison.me.uk

Re: selinux preventing access to directory net

2017-07-18 Thread Andrew C Aitchison
hether the binary rpms add any other uses of /proc - which version of exim are you using - the one from epel ? -- Andrew C Aitchison Cambridge, UK

Re: tip: Secondary Selection clipboard

2017-06-27 Thread Andrew C Aitchison
ondary-selection.html which makes clear that this is not a standard gtk feature; there are experimental modified gtk3 libraries which support secondary selection (no source yet). gtk3 means it doesn't run on SL6, so I haven't been able to explore further. -- Andrew C Aitchison Cambridge, UK

Re: Proper forum suggestion?

2017-06-26 Thread Andrew C Aitchison
? There is a forum for Scientific Linux at https://scientificlinuxforum.org/ which might be able to help you in real-time (I've never used it). -- Andrew C Aitchison Cambridge, UK

Re: Cad package move to 6.9

2017-06-25 Thread Andrew C Aitchison
it fails to run on SL6, wanting /lib64/libc.so.6 version 'GLIBC_2.14' but SL6 only has libc upto 'GLIBC_2.12'. -- Andrew C Aitchison

Re: Cad package move to 6.9

2017-06-24 Thread Andrew C Aitchison
On Sat, 24 Jun 2017, Larry Linder wrote: As usual we are always behind. We own a cad package that runs fine on SL 5.11 but will not run on SL 6.9. When you run it on 6.9 It complains about missing libs. If you do a "whereis" on the "the missing lib" - it finds it. From what I could get from

Re: firefox 52esr, SL6.9 segmentation fault

2017-05-10 Thread Andrew C Aitchison
On Tue, 9 May 2017, Keith Lofstrom wrote: Since the mid-April update, firefox 52.1.0 (32-bit) "esr" has been crashing often, on three similar SL6.9 machines. segmentation fault, no debugging information, also in firefox -safe-mode Has anyone else solved this? I've seen no problems with

Re: Scientific Linux 6.9 now Released for i386/x86_64

2017-04-18 Thread Andrew C Aitchison
On Mon, 17 Apr 2017, Pat Riehecky wrote: Scientific Linux 6.9 i386/x86_64 Apr 17, 2017 SL 6x users: Please run yum clean expire-cache That did not work for me, but yum clean metadata did. Sorry, I have lost the original error message, but it was to the effect that the

Re: GDAL on SL 7.3

2017-04-15 Thread Andrew C Aitchison
On Sat, 15 Apr 2017, Roxana Tesileanu wrote: Hi! I'm trying to access GDAL in Python and tried "sudo pip install GDAL". But an error comes out. I've downloaded also the packege from the GDAL website but still doesn't work. Could you please help me out? Many thanks! Roxana I use gdal on SL6

Re: Book/Paper technical illustrations - inkscape?

2017-04-06 Thread Andrew C Aitchison
it from epel) dia www.gnome.org/projects/dia Zirkel / CaR (Compass and ruler) http://car.rene-grothmann.de/ One interesting feature of dia is that it can be used to generate sql schema. -- Andrew C Aitchison Cambridge, UK

Re: Server going to uncommanded sleep or suspend

2017-03-09 Thread Andrew C Aitchison
On Thu, 9 Mar 2017, Konstantin Olchanski wrote: Hi, there. I wonder if anybody else is seeing the same problem with el7: The symptoms are: no ping, dead video, dead keyboard. After power cycle, syslog shows that the system has attempted to go into sleep or suspend or whatever they call it.

Re: Which C hooks go to which clipboard?

2017-03-08 Thread Andrew C Aitchison
/gui/x/xlib/window-information/selection.html Sorry I pointed you in the wrong direction to start with. -- Andrew C Aitchison

Re: Anyone know a reference to X11's clipboard hooks?

2017-03-08 Thread Andrew C Aitchison
On Tue, 7 Mar 2017, ToddAndMargo wrote: Hi All, Can anyone point me to a reference to the hooks for reading and writing into both of X11's clipboards? For the cut and paste buffers: man XStoreBuffer XFetchBuffer XRotateBuffers (all the same page) man xcutsel man

Re: Cannot find openssl

2017-02-21 Thread Andrew C Aitchison
On Tue, 21 Feb 2017, Al Russell wrote: I have been unable to get the SL6 openssl update to 8.4 that was announced in today's Scientific-Linux-Errata. When I check the SL6 sl-security repository all I find is the openssl-1.0.1e-48.el6_8.3.i686.rpm family. Is there a problem or am I missing

el6 or sl6 in (openssl) rpm packege release numbers ?

2017-02-21 Thread Andrew C Aitchison
are el..., whereas the 6_8.4 are all sl... Of course sl6_8.3 comes after el6_8.4 so the updates are ignored :-( I'm now confused, should they be el6... or sl6... ? (I'm also confused about whether I should be using sl-security or sl6-security, but that is less important). Thanks, -- Andrew C

Re: OpenSSL in SL6 ?

2017-02-10 Thread Andrew C Aitchison
On Sat, 4 Feb 2017, Steven Haigh wrote: On 04/02/17 03:22, Andrew C Aitchison wrote: https://access.redhat.com/solutions/1530413 explains Red Hat's position on this, but it can only be read by those with a Red Hat contract. You don't have to have a contract, only an account. Anyone can

OpenSSL in SL6 ?

2017-02-03 Thread Andrew C Aitchison
er OpenSSL, but you are on your own if you try to use such. I can of course build a local OpenSSL v1.0.2 for exim, but if there were a system version it would be simpler for me. Thanks, -- Andrew C Aitchison

Re: 6.6 to 6.x (6.8 now, I guess)

2017-01-27 Thread Andrew C Aitchison
On Fri, 27 Jan 2017, jdow wrote: Ran yum --releasever=6.7 update sl-release Same error going 6.6 to 6.7 as 6,6 to 6.x (6.8). Transaction Check Error: file /lib64/libasound.so.2.0.0 from install of alsa-lib-1.1.0-4.el6.x86_64 conflicts with file from package libasound2-1.0.24.1-35.el6.x86_64

Re: Integration with Apple iPad 2 air

2017-01-21 Thread Andrew C Aitchison
On Sun, 15 Jan 2017, Yasha Karant wrote: I understand that this not an Apple forum. However, my spouse has been assigned an Apple iPad 2 Air from our university administration, and she was reluctant for political reasons to demand a Linux or Android "equivalent" of this unit. I have been

Re: Security ERRATA Critical: firefox on SL5.x, SL6.x, SL7.x i386/x86_64

2016-12-15 Thread Andrew C Aitchison
.i686.rpm -- Andrew C Aitchison

Firefox 45.5.0

2016-11-18 Thread Andrew C Aitchison
When should we expect the critical security update firefox 45.5.0 https://rhn.redhat.com/errata/RHSA-2016-2780.html ? Thanks, Andrew C Aitchison

Re: MacOS X Mac Mail with SL Thunderbird issues

2016-11-11 Thread Andrew C Aitchison
On Thu, 10 Nov 2016, Yasha Karant wrote: From a colleague: Your mail client doesn’t play nicely with mine (Mac Mail). As you can see by the screen snap, it doesn’t wrap text Toggle Word Wrap :: Add-on https://addons.mozilla.org/en-GB/thunderbird/addon/toggle-word-wrap/ might do what you

RE: ACL Problem in SL7.2

2016-11-08 Thread Andrew C Aitchison
On Tue, 8 Nov 2016, Bill Maidment wrote: Hi again My research has revealed that nfs in SL 7.2 is translating the POSIX ACL to NFSv4 ACL (a completely different format). I wondered if that was the problem. Sun was working hard to be compatible with Microsoft when the NFSv4 ACL spec was

Re: SNMP scanner?

2016-08-01 Thread Andrew C Aitchison
On Sun, 31 Jul 2016, ToddAndMargo wrote: 2016-08-01 8:23 GMT+03:00 ToddAndMargo : On 07/31/2016 10:15 PM, Jon Brinkmann wrote: 'nmap -sX 192.168.1.1-255 10.1-255.1-255.1-255 ...'? That is still scanning IP's over a range.  :'( On 07/31/2016

Re: Python 2.7 OS requirements

2016-07-31 Thread Andrew C Aitchison
27 not installed on [uname nodename]" } } -- Andrew C Aitchison

Re: Python 2.7 OS requirements

2016-07-31 Thread Andrew C Aitchison
On Sat, 30 Jul 2016, P. Larry Nelson wrote: Hi all, Please don't shoot the questioner (me), as I have no experience with Python, other than knowing "what" it is and that my SL6.8 systems have version 2.6.6 installed. I have been asked by one of our Professors that one of his grad students

Re: Firefox 45.2 ETA ?

2016-06-17 Thread Andrew C Aitchison
Kevin and gang, Thanks for releasing the firefox 45.2.0 security update.

Firefox 45.2 ETA ?

2016-06-15 Thread Andrew C Aitchison
I some problem holding up an SL release of Firefox 45.2.0 ESR ? Red Hat released this critical security update almost a week ago: https://rhn.redhat.com/errata/RHSA-2016-1217.html Thanks,

Re: Need specific LaTeX utiliities for EL7

2016-06-15 Thread Andrew C Aitchison
On Tue, 14 Jun 2016, Yasha Karant wrote: WYSIWYG (not LyX that produces LaTeX but internally is not LaTeX)? Thus far, I have not found such a WYSIWYG. EPEL includs Kile http://kile.sourceforge.net/ (possibly an abbreviation of KDE Integrated LaTeX Environment).

Re: Failure to update flash-plugin in SL7.2

2016-05-21 Thread Andrew C Aitchison
ew rpm but not yet updated their yum repo. -- Andrew C Aitchison

Re: Add another executable to update-alternatives java

2014-03-24 Thread Dr Andrew C Aitchison
of the packages which they ship. -- Dr. Andrew C. Aitchison Computer Officer, DPMMS, Cambridge a.c.aitchi...@dpmms.cam.ac.uk http://www.dpmms.cam.ac.uk/~werdna

Re: Security advisory on java, how to update?

2013-11-21 Thread Dr Andrew C Aitchison
://rhn.redhat.com/errata/RHSA-2013-1451.html TUV and SL appear to have fixed these vunerabiliites in java-1.7.0-openjdk-1.7.0.45-2.4.3.2.el6_4 and friends (I haven't checked java-1.6.0... or SL5 but wouldn't be surprised if they are fixed too). -- Dr. Andrew C. Aitchison Computer Officer, DPMMS

RE: question about scipy

2013-10-30 Thread Dr Andrew C Aitchison
numpy and matplotlib which I can install piecemeal. But if I install the scipy stack from its home site will I run into problems with numpy and matplotlib? Anyone tried installing just the scipy package from its home? Thanks! -- Dr. Andrew C. Aitchison Computer Officer, DPMMS

Re: Google chrome stable 28.0 installation problem

2013-07-04 Thread Dr Andrew C Aitchison
-chrome-stable-27 in https://www.dpmms.cam.ac.uk/~werdna/google-chrome/ -- Dr. Andrew C. Aitchison Computer Officer, DPMMS, Cambridge a.c.aitchi...@dpmms.cam.ac.uk http://www.dpmms.cam.ac.uk/~werdna

Re: Flash and Chrome - was Re: FireFox Error

2013-04-03 Thread Dr Andrew C Aitchison
On Tue, 2 Apr 2013, Konstantin Olchanski wrote: On Tue, Apr 02, 2013 at 10:09:45AM +0100, Dr Andrew C Aitchison wrote: 2) For those who haven't heard this, some links: http://support.google.com/chrome/bin/answer.py?hl=en-GBanswer=95411 RHEL/SL/SLC are not listed at all. No announcement

nfs+xfs - was Re: SL6.3 2.6.32-358.2.1.el6.x86_64 kernel panic

2013-03-18 Thread Dr Andrew C Aitchison
be independent. How different is the practice ? -- Dr. Andrew C. Aitchison Computer Officer, DPMMS, Cambridge a.c.aitchi...@dpmms.cam.ac.uk http://www.dpmms.cam.ac.uk/~werdna

Re: java in firefox

2013-03-08 Thread Dr Andrew C Aitchison
between the oracle and openjdk java plugins. -- Dr. Andrew C. Aitchison Computer Officer, DPMMS, Cambridge a.c.aitchi...@dpmms.cam.ac.uk http://www.dpmms.cam.ac.uk/~werdna