STOP: c000021a {FATAL SYSTEM ERROR}

If I am doing a soft restart on Windows XP SP2 then I am getting a BSOD saying that "STOP: c000021a {FATAL SYSTEM ERROR}
The Windows Logon Process system process terminated unexpectedly with a status of 0xc0000005 (0x00000000 0x00000000).
The system has been shut down."

Can anyone tell me how to solve this problem? Thanks

Check the article on "Error Message: Stop c000021a {Fatal System Error} The Session Manager Initialization System Process..." from here - http://support.microsoft.com/kb/317189

Thanks for the link, I will check it out and let you know if it works or not.