I was just reading articles in the Washington Post and various other papers, and they said that this was a VERY sloppily written worm...rather than writing the source code by hand, they simply copied and pasted code from an existing worm. The worm only scans a certain number of ports, and rather than being able to tell what OS the victim has (most good worms can do this) it randomly launches the worm for Win XP or Win 2k, meaning that it only has a 50% chance of infecting the computer. They're expecting that someone refines the worm, in which case, it's effect would be FAR greater than what we have now. I feel bad for the people this is affecting, but on the 16th, the DoS attacks on MS will hopefully open a few eyes. And if someone refines it.....wow.