NFA Server Issues - JAV Appears Hung

Hmmm... this has happened again today, and happens quite frequently :(

Can anyone advise a solution to fix this? The only way to recover from this issue is to hard reboot the system and it hangs on shutdown waiting for the defunct java process to die.

Running on Fedora Core release 2

ERROR | wrapper | 2006/11/10 12:34:09 | JVM appears hung: Timed out waiting for signal from JVM.
ERROR | wrapper | 2006/11/10 12:34:09 | JVM did not exit on request, terminated
STATUS | wrapper | 2006/11/10 12:34:13 | Launching a JVM...
INFO | jvm 3 | 2006/11/10 12:34:14 | Wrapper (Version 3.1.1) http://wrapper.tanukisoftware.org
INFO | jvm 3 | 2006/11/10 12:34:14 |
INFO | jvm 3 | 2006/11/10 12:34:15 | This copy is licensed to Me Ltd
INFO | jvm 3 | 2006/11/10 12:34:15 |
INFO | jvm 3 | 2006/11/10 12:34:15 | Resource check failed for service jboss.web:service=WebServer. Port already in use:
8012
STATUS | wrapper | 2006/11/10 12:34:17 | <-- Wrapper Stopped