If all of that checks out and your ISP shrugs when you call them and ask for help, it's time to stop guessing and start ...

— -- Think your Internet Service Provider (ISP) is messing with your connection performance? Now you can find out, with Google's new online tools that will diagnose your network connection.

Read about What can go wrong with broadband when you move home?. Broadband news from the longest running independent information website.