Try rebuilding the database.
In Entourage 2004, you must launch the Microsoft Database Utility.
1. Launch Entourage, holding down the ³Option² key. Or, launch the
Database Utility separately; it is located in HD/Applications/Microsoft
Office 2004/Office/.
2. If you are prompted, allow the Database Utility to quit open Office
applications.
3. Once the Database Utility is open, select your identity from the list at
the top.
4. Click the ³Rebuild Database² button, and click ³Continue.²
In Entourage X, first go to Entourage -> Turn Off Office Notifications.
Now, quit Entourage, and then restart Entourage holding down the Option key.
When the Rebuild dialog box comes up, choose to do a Typical Rebuild. If
that does not fix the problem, repeat the procedure, instead opting to do
the Advanced Rebuild.
In Entourage 2001, quit Entourage, and then restart Entourage holding down
the Option key. When the Rebuild dialog box comes up, choose to do a
Typical Rebuild. If that does not fix the problem, repeat the procedure,
instead opting to do the Advanced Rebuild.
Then, to delete the message, begin by turning off the Preview Pane (View >
Preview Pane or View > Preview Pane > None in 2004). Then select the
message and delete it.