Slow Internet service due to all those extra packets of malice may not be the worst effect: As sp1n writes: "It appears that due to the way the worm formats its HTTP request and the semi-random way it seeks out vulnerable systems, it is also causing Cisco 67x DSL routers, widely deployed by Qwest, using firmware prior to 2.4.1, as well as some others, such as 3Com LanModems, to crash -- recoverable only by a power cycle. I have yet to see any news outlet cover the affect this is having on DSL service. Qwest's Interprise networking department confirmed they are receiving reports from all 14 states in their territory. Some routers running pre-2.4.1 firmware are crashing even though the web admin is disabled. This has become a huge support nightmare for every ISP in the region."
altek writes: "CNET has an article describing a worm that has taken down over 12,000 MS IIS webservers." Bill Kendrick points to another CNET story, which reports that the worm will "cause every infected computer to flood the Whitehouse.gov address with data starting at 5 p.m. PDT," writing "Time to shut down all those IIS servers before the Internet gets flooded."