Another indication that something is amiss is that when I insert disks that normally autorun, they don't anymore. I have to start them manually. When I insert a DVD into the drive, normally Windows Media Player automatically comes up and starts playing the movie. Now that no longer happens. I have to manually bring up WMP and manually start the DVD.
I'm really puzzled by this as everything was fine until yesterday. The only thing that happened yesterday is that I uninstalled the Comcast Security Manager but I don't see why that would affect XP recognizing that there's a CD/DVD in the drive. HELP!
P.S. Oh, yeah, I can burn DVDs or CDs using Nero or Movie Factory. That isn't affected by the above problem.