Running GroupWise on an Unsupported OS and Architcture
Here’s screenshot-proof that you can run the GroupWise cross-platform client on Ubuntu Linux 7.10 on an x86_64 kernel.

Also, notice my empty inbox, which I manage using Merlin Mann’s Inbox Zero strategy.
Congrats!
Could you please give me a tip on how to get that?
Thank you very much in advance!
Best regards,
p.
I will post full instructions for doing this in the next day or two. It’s not too hard, but there are lots of little steps. In particular, there are some 32-bit library dependencies that aren’t packaged for the 64-bit version of Ubuntu, that you have to hand-install, and you need a 32-bit OS running somewhere to build the .deb package, since the original RPM is built for the 32-bit architecture.