cable or adsl mate ?
If your problem has only happened after an upgrade then read below as iv had problem before.
If your on adsl and on 10mb sometimes they set a thing called "interleaving" suppose to be stable things out but it doesnt on some occasions.
I had the same problem, i upgraded to 8mb and things just went crazy from there. i would lag out in counter strike, ping spikes randomly. WHen i downgraded back to 2mb it was running fast as ever.
Also you could always ping to a destination to see where your lagging out from.
If your problem has only happened after an upgrade then read below as iv had problem before.
If your on adsl and on 10mb sometimes they set a thing called "interleaving" suppose to be stable things out but it doesnt on some occasions.
I had the same problem, i upgraded to 8mb and things just went crazy from there. i would lag out in counter strike, ping spikes randomly. WHen i downgraded back to 2mb it was running fast as ever.
Also you could always ping to a destination to see where your lagging out from.