Fraggin- I haven't seen anything negative come out of this patch yet. Spent all of last night patching a whole crap load of systems without a single problem.

As for verifying patch installation. I would not rely on the MS tools. Most of the time they are just looking to see if the installer program put the proper reg keys in place. What I like to do is open up the fix and get the date/version of all of the files included in the fix.

I then write a simple batch file that will go out to all of the servers that I upgraded and verify that the date/version of the hotfix files on the server match what is new from the hotfix.

That is about the only way to 100% verify that a hotfix has been installed. I have seen instances where for whatever strange reason 1 file would not be upgraded, so we implemented this process for all hotfix installs.