i got some servers up and running on halo and halo ce for my clan.
before the 1.7 patch and before i changed isp there was no lag, they where shut-down for some time till i got my new isp(and new router came with it) and the 1.8 update came out.

now they are lagy sometimes, you can't join them and your ping go's to 800 after a few minutes and if there is someone else in it...

this is very strange cause teamspeak server is running just fine...

just a few minutes ago all the servers where empty i joined up one it wasn't lagy for like 15 min and someone came in to and the lag begone i got the 799 ping and then he left and everything was normal again...

very weird.
i had this problem before and it stopped after a few months(not sure if i changed some settings in my router), but after i reinstalled my pc (cause i upgraded my motherboard) the lag is back again...

router: sitecom wl 173 connected with cable(100mb full duplex).
motherboard msi x48c(max 1GB p/s network transfer but limited to 100 full duplex)
cpu: intel core 2 quad 2.4 ghz oced to 3.0 ghz(oc doesn't resolves the problem...)

my ping is around 66 wile in the past it was 33.

btw sorry for my English but i am dyslectic.