I don't know how recently this group has discussed this, but the Ubuntu
intellectual property policy seems to be a bit over the top. I
understand their need to protect their trademarks, but I think they're
introducing some GPL conflicts in doing so to this extreme.
http://www.canonical.com/intellectual-property-policy
Summary
* You can download, install and receive updates to Ubuntu for free.
* You can modify Ubuntu for personal or internal commercial use.
* You can redistribute Ubuntu, but only where there has been no
modification to it.
* You can use our copyright, patent and design materials in accordance
with this IPRights Policy.
* You can be confident and can trust in the consistency of the Ubuntu
experience.
* You can rely on the standard expected of Ubuntu.
2. Your use of Ubuntu
* *You can download, install and receive updates to Ubuntu for free.*
Ubuntu is freely available to all users for personal, or in the case
of organisations, internal use. It is provided for this use without
warranty. All implied warranties are disclaimed to the fullest
extent permitted at law.
* You can modify Ubuntu for personal or internal use.
You can make changes to Ubuntu for your own personal use or for your
organisation's own internal use.
* *You can redistribute Ubuntu, but only where there has been no
modification to it. *
You can redistribute Ubuntu in its unmodified form, complete with
the installer images and packages provided by Canonical (this
includes the publication or launch of virtual machine images).
Any redistribution of modified versions of Ubuntu must be approved,
certified or provided by Canonical if you are going to associate it
with the Trademarks. Otherwise you must remove and replace the
Trademarks and will need to recompile the source code to create your
own binaries. This does not affect your rights under any open source
licence applicable to any of the components of Ubuntu. If you need
us to approve, certify or provide modified versions for
redistribution you will require a licence agreement from Canonical,
for which you may be required to pay. For further information,
please contact us (as set out below).
We do not recommend using modified versions of Ubuntu which are not
modified in accordance with this IPRights Policy. Modified versions
may be corrupted and users of such modified systems or images may
find them to be inconsistent with the updates published by Canonical
to its users. If they use the Trademarks, they are in contravention
of this IPRights Policy. Canonical cannot guarantee the performance
of such modified versions. Canonical's updates will be consistent
with every version of Ubuntu approved, certified or provided by
Canonical.
