This only started about a month ago and i have always had the same AV software AVG. I had it when it started and before the problem started.
I would say the pausing happens every 2-4 minutes and doesn't stop. Every pause can last from half a minute to about 1 minute I think.
I only go on these forums, the xbox forums, my homepage itv news lol and swapitshop.com I think that's the main things i go on and i might go on the BBC the odd time but that's about it.
I only ever have the internet on, on it's own. The odd time i might have Microsoft word but that's not often at all!!
I don't think the pauses are the same length but they could be and it's hard to tell sorry.
Windows 98SE 500MHZ 188MB Ram and a lot of security software