Block checksum error [C04F]

On just this one user, I keep getting a lot of C04F msgs in the POA's log every time I try to access the Sent Items folder.

15:47:24 1DD The database facility reported error [C04F] on userqoo.db
15:47:24 1DD The database facility reported error [C04F] on userqoo.db
15:47:24 1DD Error: Block checksum error [C04F] User:MyName

Sometimes this user will cause the above err msgs when they try to access a sub folder in the Cabinet. Sometimes they can display a sub folder's contents, sometimes not. But always cannot access the Sent Items folder.

When I try to create a search for Item Type = Mail and Item Source = Sent, I get no items found.

Is this "block checksum error" on the GW database or a problem on the NetWare volume?

When I try to run the standalone GWCHECK.EXE, I get the following err msg:
Mailbox/Library Maintenance can not be executed because a duplicated request is running.



Any ideas what to do to resolve this?