It looks to me like the problem is a missing "break" statement at line 181 of offlineimap/folder/Maildir.py. In an installed offlineimap, the file is:
/usr/share/python-support/offlineimap/offlineimap/folder/Maildir.py Daniel -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]