[Freeswitch-users] Event system overloading. Taking a 10 second break

When I have many traffic, sometimes it appear in the log: 2012-01-20 17:09:34.028067 [CRIT] switch_event.c:339 Event system overloading. Taking a 10 second break 2012-01-20 17:09:35.036984 [CRIT] switch_event.c:360 Out of event dispatch threads! Slowing things down. Any advise on avoid that? The cpu is running at 40%-50% of load. Stephen