always got this WARNING -- Ndb kernel thread 0 is stuck in (2 replies)

Hi,

I use mysql cluster 7.2,the ndb node got warning message like this:
WARNING -- Ndb kernel thread 0 is stuck in: Job Handling elapsed=109.
It take out everyday,sometime the node will shutdown.is there anyone
know about this?

my config file:
----------------------------------------
[ndb_mgmd]
hostname=10.10.10.1
datadir=D:\MySQLClusterHome\my_cluster\ndb_data
NodeId=1

[ndbd default]
noofreplicas=2
datadir=D:\MySQLClusterHome\my_cluster\ndb_data
DataMemory=256M
IndexMemory=36M
TimeBetweenWatchDogCheck=10000
TransactionDeadLockDetectionTimeOut=10000
RealtimeScheduler=1
HeartbeatIntervalDbDb=5000
MaxNoOfExecutionThreads=4
RedoBuffer=32M
LockPagesInMainMemory=1

[ndbd]
hostname=10.10.10.1
NodeId=3

[ndbd]
hostname=10.10.10.1
NodeId=4

[ndbd]
hostname=10.10.10.1
id=4

[ndbd]
hostname=10.10.10.1
id=5

[mysqld]
NodeId=50

[api]
NodeId=51