Hmph, I found it interesting that this thread re-appeared today. I work as a Computer Tech at a local shop and we had about 12 phone calls and 4 computers come in today for errors due to this exploit. It seemed that it would cause a svchost error and then reboot in 60sec related to RPC. I found the patches mentioned above and they seemed to take care of any and all problems.

Note: The computers all had DSO exploit on them as well when I ran spybot

LINK: Microsoft Support Download Windows XP

my2cents