This is my first post. I was searching for a solution to this problem and ended up here. I noticed this problem after removing the blaster worm virus. I thought it might be a variant but I haven't found any other viruses. I am running Diskkeeper but I don't see how THAT could have anything to do with this problem but I am going to do some investigation. Not running the "svchost.exe" file at all isn't a solution because I am running a network. If disabling the Telephony service doesn't work, there is another copy of the file in the "\windows\system\dllcache" directory so I think I am going to copy that over the existing file to see if I have any luck. I am not at my computer now so I can't try any of these suggestions but I will update all of you when I can again.