Go to control Panel and open up Internet options.
On the Temp folder section. select settings and reduce the size of the temp folder to 100Mb. Get rid of all temp internet files.
Secomdly. go back to control panel. Add/ Remove programs. Select Internet Explorer 6 and select remove. A diologue box appears with " REPAIR" as an option. Select this and follow it through.
Then reboot and see how it goes.