error deleting email

[Theodore Cekan]

For some reason I am unable to delete messages through pop3.  Here is my
session:

+OK <242.942111154@smtp>
user test
+OK
pass test
+OK
list
+OK
1 583
2 583
3 583
4 888
.
dele 1
+OK
quit
-ERR unable to unlink all deleted messages
+OK


I am using a virtual popuser, which has write access on the files.
Receiving email works fine.

Any ideas?

Thanks,

Ted