teamnoir , I'm sorry that this has caused you issues. Upgrades carry all sorts of changes, some of which will unfortunately break your customizations. Programs are added all of the time, and since you've got things in root's path you'll need to test each of those on upgrade to make sure they're not conflicting with new programs. The only paths before the system path by default is /usr/local/sbin:/usr/local/bin, so you should probably check these paths for conflicts with the system paths on upgrade.
start has been in all users' path since at least Ubuntu 10.04, possibly 9.10. I'm not sure we've "opened a hole in your security" so much as introduced a change which unfortunately conflicted with your configuration. The same thing happens when we update library versions or migrate to a new version of perl.. unfortunately, things outside our control break. One last note, sudo does sanitize the path: clint@clint-MacBookAir:~$ sudo sh -c 'echo $PATH' /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin clint@clint-MacBookAir:~$ echo $PATH /home/clint/bin:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in Ubuntu. https://bugs.launchpad.net/bugs/900496 Title: dovecot-core installation fails because "start" is used from PATH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dovecot/+bug/900496/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs