FMS 3.5 looses connectivity Core (5768) disconnected from edge.

Im running FMS on windows 2003 using the built in apache server. At random times the server will stop responding and I have to restart the service. It could take 5 min or 4 hours. Any idea what could be causing this issue?

Core Log

#Fields: date time x-pid x-status x-ctx x-comment

2010-04-01 02:29:01 5768 (i)2581247 Core (5768) disconnected from edge. -

Admin Log

#Fields: date time x-pid x-status x-ctx x-comment

2010-04-01 02:29:01 3612 (i)2581242 Core (5768) disconnected : _defaultRoot_:_defaultVHost_:::_1. -

2010-04-01 08:28:35 3612 (i)2581241 Connection to admin received. -

2010-04-01 08:28:35 3612 (i)2581243 Connection from core 5268 received. -

2010-04-01 08:28:35 3612 (i)2581244 Connection from core 5268 accepted. -

2010-04-01 08:40:03 3612 (i)2581242 Core (5268) disconnected : _defaultRoot_:_defaultVHost_:::_1. -