There was a problem initialising Opera Mail.
Failed to open the following file:
Restart your system and try again. If that does not work, restoration from your backup source might be necessary. If that is not possible or does not work, report a bug on http://bugs.opera.com/wizard/ and search the forums for help with this issue.
Not sure why this should differ between openSUSE and Ubuntu, but if I can't get Opera working correctly with my e-mail under Ubuntu, then I can't move to Ubuntu.