sounds like the id channel ur on is busy with traffic at peak time. join the club m8.
if ur lucky - try switching id channels on ur cablemodem config page. and ur area might not be too saturated for ur ping to return to normal on a different channel.
still not lucky - get on the phone and complain/ask for customer relations team leader etc. and get some discounted cable till its fixed.
until folks in ur area start complaining - most wont cause their new and too busy downloading everything under sun (but too scared to say it cause its not exactly free legal downloads they going for is it?)
- this pockets hits gamers the worst - due to the incredibly bad latency caused by this oversubscription to a duff and actually not upgraded network.
gl
ps - really wish telewest would stop telling lies about the network and causing so much needless hassle to customers. u dont need to speed test with java programs.
ping ur server with ur favourite browser.
- its not ur os - its very unlikely u have virus. adaware and a good norton net package will cover u with ms updates.(which can be worked around if its not legit copy too)
not that it matters tho - hope u not gone too frustrated m8. its the network