abrt 1.0.6 detected a crash.
Attached file: backtrace
cmdline: python /usr/bin/calibre
release: Fedora release 12 (Constantine)
Created attachment 390351 [details]
Do you by any chance have a qt-x11 version that's not in F12, 4.6.x maybe?
I have actually formatted my fedora 64 bit installation coz there have been a lot of crashes in almost all applications .. so can not help you here any more.
I think this should be fixed by after the update of qt4 in fedora and with the latest version of calibre 0.6.42 that will soon hit the repos. You can use updates.fedoraproject.org for feedback in the meantime.
calibre-0.6.42-1.fc12 has been submitted as an update for Fedora 12.
calibre-0.6.42-1.fc12 has been pushed to the Fedora 12 testing repository. If problems still persist, please make note of it in this bug report.
If you want to test the update, you can install it with
su -c 'yum --enablerepo=updates-testing update calibre'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F12/FEDORA-2010-3212
calibre-0.6.42-1.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.