Zabbix server stops, can not find shared memory for database cache

[sarathyme]

I am using Zabbix 1.6.3 with MySQL DB, My zabbix server stops, in log i am seeing this error message

9681:20090422:212953 One child process died. Exiting ...
9681:20090422:212955 Can't find shared memory for database cache. [Invalid argument]

any clues please

Thanks
Vijay
---------------
Exploring Zabbix!

[tchjts1]

Not the exact same error, but maybe this will help point you in the right direction...

http://www.zabbix.com/forum/showthread.php?t=11116&highlight=%5BInvalid+argument%5D