Microsoft had a mammoth patch Tuesday this month with 28 bug fixes (23 critical). (Computerworld article linked above. This is one of the largest update releases in five years (!) Those fixes were wrapped up in 8 updates for Internet Exporer, Office, Sharepoint, Windows media player and visual studio and Visual basic. (Oh and it looks like there are two more they SHOULD have fixed – reports of 0-days in the wild.)