Rule Changes Received Date Using IMAP

[Rob]

I have Outlook 2003 running on XP with the latest updates and service
packs. In Outlook I have an Exchange account and an IMAP account.
Whenever I try to run any rule on the Inbox of my IMAP mail, it changes
the Received Date listing to the current date on about half of my
messages. When I open one of these incorrectly dated emails, the date
shown in the message is correct and the date changes to the proper date
in the listing of emails. Also, if I remove the IMAP account and then
re-add it, the Inbox messages once again have the correct date. I've
searched the web over and have found no responses that address this
issue. Any help would be much appreciated. I'm starting to lose my
mind trying every permutation I think might make a difference.

Thanks,
Rob