Hi-I've just been reading your thread and don't blame you for returning to Sky. I was with them prior to O2 and wished I'd stayed. To be honest I'm not too sure if the info you've been given is trully right, help-wise. My mate works with pc's and has his router fitted with filter as I have too, and its been fine-til joining O2! I noticed 'Saturday''s emphatic about NOT having a filter with the router...hmmm.........

good luck with Sky anyway....