I'm seeing this all the time in Edgy (f-spot 0.2.1) with even trivial use (tagging and browsing photos).
I think it's an upstream bug in f-spot, based on information here: http://www.mono-project.com/FAQ:_Gtk#My_application_crashes_with_threads -- f-spot crashes in Xlib after a few moments of use https://launchpad.net/bugs/47807 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
