I'm having a similar problem, but my backtraces look a little different so I'm attaching them also. I have evolution-alarm-notify starting on gdm login so I can get notified of events in my calendar. However, after every login bug buddy pops up to tell me evolution-exchange has crashed. I think it is related because I see the same crash/hang behavior when I open evolution and try to view my exchange calendar.
** Attachment added: "2 crash logs" http://librarian.launchpad.net/4930642/evolution-exchange-bugreport-combined.txt -- Opening Exchange calendar crashes https://launchpad.net/bugs/62297 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
