Users cannot view items on shared calendar

[Trey]

Users are not able to view items that they post to a shared Calendar
in Outlook 2003. The Calendar is part of a mailbox. I have given this
group AD rights as well as Delegate rights on the mailbox that the
Calendar is in. They can post, but they can't see what they've posted.
I know that they have posted because I have gone in and viewed all of
their test postings.

I still think this is a permissions issue.
Anyone thoughts on this would be appreciated.

Thanks.