I don't know if this helps but, on the page for the upload speed test it says:
quote:
Originally posted by PC Pitstop
DOES YOUR BROWSER HANG WHEN YOU TRY TO TEST? It is probably due to your firewall. The upload test uses the FTP protocol to create a test file on our server. Some firewalls intercept the activity as suspicious, and this can hang or freeze the browser. If you receive a negative number for your upload results, this also indicates that the FTP protocol has been blocked. Temporarily disabling your firewall may allow you to complete the upload test.
Maybe you should give it a try?