SharePoint Portal administration service was not starting

I have now experienced this issue at multiple customers so wanted to get this out there.

Problem:=========
After Installing few Windows server 2003 updates, SharePoint Portal administration service was not starting on all Sharepoint servers.

Environment:===========

Sharepoint Portal server 2007Medium server farm

Resolution:=========
We changed following registry settings on the Sharepoint servers:

Added:HKLM\SYSTEM\CurrentControlSet\Control change DWORD value ServicesPipeTimeout and assign 60000 (i.e. 60 thousand which means 60 seconds)

Modified:Increse value of in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control string value WaitToKillServiceTimeout to 120000 (120 thousand which means 120 seconds)

Rebooted the server.

Found that Sharepoint portal Administration service is running fine on the server.