Ошибка после не долгой работы ГС

CPU AMD 64 x2 2.5
RAM 4 Gb
Windows XP x64 SP2
l2jFree 1.2.10
После не долгой работы выдаеет такую ошибку, но не всегда.
Вопрос: Почему и с чем едят?

INFO FourSepulchersManager: Entry time: Sat Mar 21 20:55:09 GMT 2009
Exception in thread "ThreadPool-47" java.lang.OutOfMemoryError: GC overhead limi
t exceeded
at java.util.concurrent.locks.AbstractQueuedSynchronizer.addWaiter(Unkno
wn Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(Unknown
Source)
at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(Unknown Sou
rce)
at java.util.concurrent.locks.ReentrantLock.lock(Unknown Source)
at java.util.concurrent.DelayQueue.offer(Unknown Source)
at java.util.concurrent.DelayQueue.add(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.add
(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.add
(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
runPeriodic(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source
)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
INFO Olympiad System: Data updated successfully.