I don't really know. I can only say is that I work where part of the business is computer support and consultation... in the past 3 weeks, the number of calls for help that we get has nearly doubled and more than half the calls are problems from people that just installed service pack 2 on XP... something is just really not right (either with the service pack itself, or with how it is interacting with something ... or something). This is just based on my observations at work, I don't have any actual knowledge about the service pack itself.