I agree with Nicole it is totally the Sonic Software although i have a slightly different issue. I now cannot get rid of the Sonic Update Manager that constantly requests "The feature that you are trying to use is on a CD-ROM or other removable disk that is not available" Despite me not actually requesting to update anything or use any feature or even use the software. I try and remove the whole app to re-install it but can't because it's constantly running the error messages in the middle of my screen and therefore if i go to Add/Remove programs it says I can't change/remove/repair as it's in use.
It has basically meant that now i can't use my computer as i'd wish to the point even Dell is unsure as to what the solution is. They've obviously stuck some sort of virus on my computer.
Thanks Sonic. Nice one. Not.