I've been having this problem on and off probably forever, but lately it is especially bad in battlegrounds and devastating in arenas. Usually happens when I start casting, or pop a couple cooldowns and try to hit my instants - I get a 2+ second lag spike before anything happens. I also see the spike a lot when I get a kill, or get close - I see the spells cast, I see them connect, health bar doesn't move, 3 seconds later - player appears to be dead.

I have been looking at my latency during these spikes and it stays <90ms on all 4 clients.

I'm software boxing, keyclone on a quad core 2.66ghz with 8GB ram. Cable internet, ~6mbps down 1mbps or so up, going through wireless.

Anyone else having this problem?