I installed the latest MS patches and after rebooting, my wireless
network refused to connect. It still showed excellent signal strength
but was unable to establish a connection. I tried using both the
adapter's client (Intel PRO Set) and the standard Windows client,
with identical results.
Then I uninstalled the patches and this fixed the problem.
The patches that were installed and then removed were:
913807
905756
913161
912945
904942
912475
I'm in the process of opening a call with MS, and will post
more information when it's available.