an Internet Explorer problem, and the cause may be what are called add-ons.
There's an easy way to find out:-
1. Shut down Internet Explorer.
2. Go to 'Start' and click on 'All programs' then on 'Accessories' and finally on 'System tools'
3. Now look for a line that says 'Internet Explorer (no add ons) and click on it.
See if that fixes the problem. If it does, post back here, and we'll go through a procedure which will identify the add-on that's causing the problem.