Turn off Script Debugging notification. In IE/ Tools/ Internet options/ Advanced tab/ Browsing Section, untick "Display a notification about every script error". If that doesn't cure it, turn off Script debugging by ticking the "Disable Script Debugging" box just above that one.
This is not much help to you Clonetrooper, but I have the same problem (without the error messages), and so does the wife's PC. The microsoft tech support site may have an answer but I havent been bothered to look yet.