I would venture to say that it is spyware issues from the screensaver program that you downloaded it from. If you are using a third party screensaver well they are full of malware/spyware. They also use funky DLL files and will latch on to a good one in your computer and cause the DLLs to become damaged.
If you plan to remove it try to find its own uninstall progam if you use add/remove from windows it will take a lot of the DLL files with it and then you will more than like have to do a repair.