Microsoft Safety Scanner Issue

Whenever I visit the MS Safety Scanner download page the Trusteer Shield jiggles and the page becomes unstable. If I rest the cursor on the Shield a message appears reading something like: a program wants to write an unauthorized script. It may be a coincidence but after this happened, I had to renew my purchase of Norton Internet Security. This is a bit unsettling. Why is it happening? I did a scan and whatever problems were found were removed.

To be clear, I am not interested in running or relying on MS Safety Scanner for malware protection but the problem is what sent me looking for a cause and a good malware removal tool to rid my computer of whatever is causing the problem. Please help.