Just want to post my experience with the current patches...
I have 15 PC's in a test group, the patches are supplied via WSUS. All of these machine are Optiplex 755's and 960's. They have a mix of Core 2 Duo and Core 2 Quad CPU's, and a mix of 2GB and 4GB of RAM. 8 of these are Win 7 x86, the other 7 are Win 7x64. They
are all running Trend Micro WFBS for the A/V. Also, 6 of these PC's are running IE10, the others are running IE9. This test group has been fully patched, and so far during testing none of them have had any problem at all.
Since the update is a kernel update, I wonder if someone who is experiencing the issue could uninstall their antivirus and then try the patch to see if there is any change...