The worm appeared only to overload my CPU so that I was unable to do much of anything. It was more of an annoyance than anything else -- before I got the virus, I merely stopped the application that was hogging all the processing power. However, Microsoft apparently thought it not so much a pest as a pain-in-the-ass, judging by the turn of phrase in the article:
appeared on Friday and exploits a recently disclosed hole in a
component of Windows called the Local Security Authority Subsystem
Service, or LSASS. Microsoft released a software patch, MS04-011, on
April 13 that plugs the LSASS hole.