Figured I post this here before filing a bug report in case someone have seen this before.
The following behavior have been replicated on Windows Vista w/ Outlook 2003 and Windows XP with Outlook 2003, both clean installs with only Windows and Outlook installed.
Periodically over the day Outlook crashes for no apparent reason during normal use and give the error message: Can’t open this item. Another application closed unexpectedly while using your Personal Folders file ‘C:\Users\username\AppData\Local\Microsoft\Outlook \Outlook.zdb’. To prevent potential damage to your Personal Folders file, it will not be available until you close all applications currently using it.
Even using only Outlook this happens and the only thing that will fix it is restarting Outlook or we get that message trying to access any folders on Zimbra using Outlook. Using web client is not affected.
This happened both on Zimbra 4.5.4 and 4.5.5. Clean install of server have not fixed the problem.
Gonna stop here. If anyone have seen something similar feel free to share the information.