Microsoft Security Response Center (MSRC) talks about MS06-015 / KB908531

If experienced problem after installing the security update KB908531 (MS06-015), try below possible solution as per MSRC:

– (If you have multiple user accounts set up) Log onto the computer using an account with Administrator privileges

– Click the Start button, then click Run and type “regedit” at the prompt, without the quotes; this will start Registry Editor

– Locate the HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionShell ExtensionsCached key in Registry Editor

– Right click on the key and select New / DWORD Value

– Rename the resulting value “{A4DF5659-0801-4A60-9607-1C48695EFDA9}{000214E6-0000-0000-C000-000000000046} 0x401”, without the quotes

– Right click the value, select Modify, and type “1” into the Value Data field

– Close Registry Editor

They are working on Knowledge Base