Source: http://arstechnica.com/news.ars/pos...ormance-and-compatibility-packs-released.html
Downloads:
http://support.microsoft.com/kb/938979/en-us
http://support.microsoft.com/kb/938194/en-us
KB 938979, aka the "performance and reliability" update, addresses "poor memory management performance," as well as a handful of specific issues, including a nasty problem installing printers when User Account Control is disabled. Also gone is the ever-so-annoying networking flaw that would strike TCP/IP dead after a computer wakes from hibernation, and offline file synchronization is reportedly fixed, according to the release notes.
KB 938194, also known as the "compatibility and reliability" update, should probably be called the "now you can play games with your computer" update. It purports to address a handful of gaming-related problems, including compatibility issues with NVIDIA's G80 series of cards. The lame printer spooling bug that was afflicting many of you has also been addressed.
Downloads:
http://support.microsoft.com/kb/938979/en-us
http://support.microsoft.com/kb/938194/en-us
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