Hello,
during last weeks while testing the kamailio (openser) modules with sip-router core I got x-lite 3.0 working on linux (ubuntu) with wine 1.1.20. I posted guidelines at: http://appdb.winehq.org/objectManager.php?sClass=version&iId=16413
Voice, IM&Presence seem to work just fine. Video was not tested as I couldn't make any wine application see the video cam, although it is working fine on linux with skype or ekiga. For me it is a great tool to test the presence, hope it will be useful for some of you as well.
Apart of x-lite, I got other sip softphone working with wine: - pangolin - works fine, but the presence status changes are not sent to server (no PUBLISH) -- might be a bug in the software, maybe someone running it on windows can confirm it or not - zoiper communicator rc1 free edition for windows - linux version seems to be available now, but requires to register with their site
Cheers, Daniel