form becomes unavailable
 

hello all-
i have a SBS 2003 sever running exchange with 2 users all running outlook2003
.. we have made a custom contact form to be utilized by both users.
the form works nicely and has no issues for one user while the other user
can use the form also but after some time ( no regular time interval )
sometimes 5 mins other times an hour or 2the form becomes unavailable. if i
goto the server or the other workstation and re-publish the form it becomes
available to user 2 again but only for the above time then it becomes
unavailable again at random intervals.
thanks in advance to for anything anybody can suggest . its driving us nuts
to have to republish the form multiple times each day ......