Hey, all. I just wanted to pass along something that I found with the April 2008 Windows Update for WinXP. The following updates would not install: Security Update for Windows XP (KB941693) Security Update for Windows XP (KB945553) Security Update for Windows XP (KB948590) Whenever they would download, they would fail the verification, with an error code of 0x80072F78, which apparently means "ERROR HTTP INVALID SERVER RESPONSE", according to http://www.fermu.com/content/view/207/37/lang,us/ . Once I discovered this, I temporarily disabled the Web Access Protection portion of NOD32 v.3, and the updates installed just fine. For whatever it is worth, I do have Internet Explorer set to filter in active mode, if that has anything to do with it. Again, I just wanted to pass this along, in case it helps anyone else in the future.