Monitor Status Unknown   

Hi Guys,
I have 2 FE servers and 2 BEservers. The 2 BE are Clustered together.
On the clustered server I have a yellow warning sign on the monitor
status and under status column is UNKNOWN.
I looked into the event viewer htere is nothing to find there.
I do not want to wait till the warning sign escalates to critical.
PLEASE HELP SOONER!!!
Thanks

date: 25 Feb 2007 16:31:34 -0800   author:   abassydo