I had the same problem and 'fixed' it by renaming ~/.ICEauthority to ~/.ICEauthority.bak Also see http://oldbugs.calibre-ebook.com/ticket/6289
** Bug watch added: oldbugs.calibre-ebook.com/ #6289 http://oldbugs.calibre-ebook.com/ticket/6289 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/597101 Title: Calibre fails converting to Mobi at final step To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/597101/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs