McAfee update manager has stopped working.

Hi, I use McAfee on my Windows Vista home premium 32 bit PC. Recently I am getting this error which I never seen before.
I think my McAfee update manager is not working at all. I am currently using a IE 8 as my browser.
Can anyone tell me the reason I am having this problem?
Hope there is a solution to this problem.

McAfee Update manager Service
Problem: stopped working
Problem signature
Problem Event Name: APPCRASH
Application Name: mcshield.exe
Application Version: 11.0.669.0
Application Timestamp: 4f6e75ece
Fault Module Name: mcupdmgr.exe
Fault Module Version: 11.0.669.0
Fault Module Timestamp: 4f6e75ece
Exception Code: c0000005
Exception Offset: 000060701
OS Version: 6.0.6002.2.2.0.6783
Locale ID: 4105
Files that help describe the problem
AppCompat.txt
WERInternalMetadata.xml
WERDataCollectionFailure.txt
