ISP:  Comcast

NAT:  Open

Regions:  Aurora, Illinois (Chicago Suburb)

It seems to me that the lag increases when I am partied up with 2 or more friends, all of us have the same Comcast NAT type Open.  Last night around 8 PM CST was the worst we have seen all week.  I would be walking/running down a path next to a building then suddenly I am running straight into a wall, it kept happening over and over again until about 10:30 PM. 

ISP- BT infinity

Nat- Open

Region- UK

Getting framerate and lag in most games especially when there is air support up.  Have been killed before I even see the person firing at me I pull host on occasion and when I do my game is unplayable.  Cant say im holding my breath for a fix sure im still waiting on a fix for Black ops.

ISP: Comcast

Nat: Open

Down: 12Mbs

State: TN

Have also seen spikes of lag when grouped with friends, or when playing against other players in different countries, Spikes when I come close to that player.

ISP: RCN

NAT: Open

Region: US (New England)

I have very little connection issues when it comes to this game. I expereince some lag when I play with my buddy who is stationed in Iraq, or when I play with my cousins in California, but that is sort of expected. When I host, my connection fluctuates a lot becasue I have 4 roommates and depending on what their doing on the computer it messes with the connection. Most of my connection issues stem from P2P servers and are no different than what I've experienced in other online games, and overall I would say my connection in MW3 is pretty solid

ISP : virgin fibreoptic, average speeds 22mb down 5mb up

NAT is always open

england - london

i can barely play the game.. if its not due to the lag problems its the constant 'server connection timed out' which happens 3/5 times.