I first noticed this problem about a fortnight ago, and has been getting worse to this day.

Unless I physically reset my cable modem by removing the Power cable, waiting 30 secs and plugging it back into the modem, my internet speed will slowly crawl to a full stop. At first this used to happen once a day, then twice a day. Yesterday I formatted my hard drive and reinstalled Windows XP (Not in an attempt to fix the problem, was planning this). In the last hour I've had to reset the modem 4 times due to the internet connecting at speeds that makes dial up speed looks like a bar of wet soap being chucked down a greasy slope

I've come to a conclusion that Virgin is giving me the shaft, but I'd like a 2nd opinion before I consider canceling my service with them.

I have an NTL modem since I was with them before Virgin took over. I doubt this has anything to do with it, but its the only thing I can think of that would make this problem fixable at my end.