Has XP finally fallen down???
More likely you are infected with the Blaster virus.
http://securityresponse.symantec.com/avcenter/venc/data/w32.blaster.worm.removal.tool.html
Mine comes up with a flag stating that the network has probs (RPC)?? and gives me a count down to reboot and to save any stuff I am working on. This occured after a total restore. Also updates will down load, but when I checked for further updates the same ones were there. Does not happen all the time, but a apin in the Axxx.
Has XP finally fallen down???

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic