Openfire server

hello guys i need a help for openfire server. i use to pidgin msger. there is a around 150 users but every day openfire server is down. what can i do that error? please help

the error show in

Exception in thread “Jetty-QTP-BOSH-45 - Acceptor0 SelectChannelConnector@0.0.0.0:7070” java.lang.OutOfMemoryError: Java heap space

Exception in thread “timer-monitoring” java.lang.OutOfMemoryError: Java heap space

Exception in thread “Jetty-QTP-BOSH-47” java.lang.OutOfMemoryError: Java heap space

Exception in thread “SocketSendingTracker” Exception in thread “Thread-610” java.lang.OutOfMemoryError: Java heap space

java.lang.OutOfMemoryError: Java heap space

Exception in thread “HashSessionScavenger-0” java.lang.OutOfMemoryError: Java heap space

Exception in thread “HouseKeeper” java.lang.OutOfMemoryError: Java heap space

Exception in thread “pool-3-thread-1” java.lang.OutOfMemoryError: Java heap space

Exception in thread “Jetty-QTP-AdminConsole-32” java.lang.OutOfMemoryError: Java heap space

Exception in thread “Thread-657” java.lang.OutOfMemoryError: Java heap space

Exception in thread “Jetty-QTP-BOSH-51” Exception in thread “pool-3-thread-9” java.lang.OutOfMemoryError: Java heap space

This is from the announcement on top of the forums:

Announcement: Suffering from memory-related issues in Openfire? Read this!

Openfires up to and including version 3.6.4 (and looks like 3.7.0 too) suffer from a memory leak in its PEP component. If your Openfire domain is crashing with OutOfMemoryExceptions, you might be having this problem.

As a workaround, you can disable PEP, by setting the Openfire property xmpp.pep.enabled to false.

More information can be found in this discussion: Openfire 3.6.4 memory leak with Empathy