@NightMares: I tend to ignore most of their non-critical updates for that very reason... Have certainly seen serious problems caused by driver updates installed from the Windows Update site (I prefer to go directly to the appropriate vendor site).
However, if you are vulnerable to the DCOM exploits, you might want to check out GRC's Freeware, which includes a utility to disable DCOM:
The DCOMbobulator DCOMbobulator allows any Windows user to easily verify the effectiveness of Microsoft's recent critical DCOM patch. Confirmed reports have demonstrated that the patch is not always effective in eliminating DCOM's remote exploit vulnerability. But more importantly, since DCOM is a virtually unused and unneeded facility, the DCOMbobulator allows any Windows user to easily disable DCOM for significantly greater security.
