Defo one to watch out for if you're using SMS2003 + ITMU to deploy the April 2010 patch set

The ConfigMgr support team blog:

We've been getting some calls about this one so I thought it deserved a mention here.  If you're having some ITMU related issues with the April 2010 security patch install then you'll want to take a quick read of this one.  Note that this issue only affects SMS 2003.  Our currently supported products, ConfigMgr 2007 and WSUS 3.0, do not share this limitation.

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Issue: Deployment of the April 2010 security patches requires two executions of PatchInstall.exe and may require two reboots of the client. On the first execution, the PatchInstall.log shows:

INSTALL FAILED: UpdateID = 804db346-55c5-44b7-8491-1ecf77062836, QNumber = 978601, Title = Security Update for Windows XP (KB978601), ExitCode = 1642, Executable = C:\WINDOWS\system32\VPCache\PackageID\SmsWusHandler.exe /InstallFile:"\\DPServer\SMSPKGx$\PackageID\804db346-55c5-44b7-8491-1ecf77062836\windowsxp-kb978601-x86-enu_49ae6ac4f6e0a609124f2ce6f80fcef249273c02.exe" /UpdateID:804db346-55c5-44b7-8491-1ecf77062836

Check out more here: http://blogs.technet.com/configurationmgr/archive/2010/05/10/sms-2003-itmu-v3-requires-two-passes-two-reboots-to-deploy-april-2010-security-patches.aspx