Navision Application Server - Hanging?

Has anyone run into problems with NAS hanging or being non-responsive? We are currently running multiple instances of NAS 3.10A W1 with all hot fixes 1-6 applied. NAS is running as a service on a Windows 2000 application server with Active Directory. NAS is configured to logon to a SQL2000 db (separate machine) and a Java Messaging Service is used to move XML documents between Navision Application Servers. The NAS maintains an active SQL connection and JMS connection but does not process the documents.

WRONG FORUM!! Topic moved from Open Subject to Attain Technical Forum.