I got this off of X-teq Setup: When you right-click the mouse in Internet Explorer, the program checks it codepage settings in the Registry. It if finds a blank codepade, then it will try to locate a replacement. Doing this wastes a lot of time and processor cycles, so by removing the empty entries, the process can be speeded up. In X-teq, go to: All X-Setup Plugins > Internet > Internet Explorer > System > Clean Up Code Page References. It found 79 error invalid codes for me. These are the references for NLS Files = Multiple Language Resource Files. Character Translation; National Language Services driver (font or font map), we discussed in our Slimming Down XP threads.