Getting kicked out of games, but not the PSN

I have a similar problem to others regarding staying connected to PS3 games, but unlike those others, when I lose connection to a game, I stay online and logged into the PSN.

On Rock Band, for example, I get "The Leader has Left" about 8 times out of 10 (or simultaneous disconnects from the other players). I get disconnected on Burnout Paradise, too. Even World of Warcraft, a PC game, kicks me out from time to time.

But, again, my Internet connection remains just fine, and I say connected to the PSN.

I've done the static IP thing on the PS3. I've set it to DMZ. I've turned off SSID broadcasting. Media Sharing is off. I've tried different channels on the router. My signal strength is 82%, but I even bought a wireless extender that brought it to 100%. No change.

The only difference is that I recently moved and now have the 6M+ Comcast package.

Could it be the modem? If the modem was dropping packets, though, wouldn't my entire internet connection go down?

Just how can I get disconnected from games but not the internet?

This is very frustrating, but this is also the forum with the smartest people, so hopefully someone has a suggestion or two that I haven't tried yet. Thanks!

I'm not using a headset.

It coincidentally started right around the time I moved and switched to Comcast (from a local terrestrial wireless outfit) and the 2.41/2.42 update.

So I can't pinpoint anything. I did a line test at dslreports, and it looks good. The download speeds are blazing fast (8mbps to 19mbps). Latency is low. All seems good.

World of Warcraft also kicks me out occasionally, so it's probably not just a PS3 thing. I've changed so many router settings on my WRT54G that I could probably get a job as an apps person there.

It's just very frustrating. If the internet would go down, too, during these disconnections, then that would actually be an easier problem to isolate. ARGH.

I'm paying for the 6M package, but the dslreports speed test has given me results up to 19M. I typically get about 8M.

I think I'm gonna ask for a new modem. The problems happened right when I moved, so the only variable that changed was the new ISP.

While playing World of Warcraft last night, I noticed the latency occasionally going way up--to around 1500ms. Then it would go back and stay at around 150ms for a while, then go back up. 150 even seems higher than I think it should be.

My guess is that if the latency becomes too big, the PS3 game servers probably interpret the lack of response as a disconnection on the other end. The PSN, though, doesn't care, and that's why I still stay connected to it.

That's my guess. Comcast is coming out tomorrow to check the line.

NAT 2 with the PS3 set as DMZ, so all ports are open.

It's a Linksys WRt54g, rev.3, with latest firmware. PC connects directly to the router--PS3 wirelessly.

World of Warcraft disconnects much less often than the PS3 games. I can barely get through one online Rock Band song without a disconnect. WOW can go as long as a half and hour or more before disconnecting from the server.

Comcast has done their remote tests while I'm on the phone with them, and they insist the modem looks good. But they're coming out to check the outside line, so I'll have them do a test swap of the modem, too.

SOMETHING is causing the unusually high spikes of latency, and that's got to be the problem, I think.

The Comcast guy came out today--he said all his tests showed everything on their end working great (of course. ). I wasn't home, but convinced him to swap out the modem just to rule it out. I'll see what happens when I get home tonight.

Cool. I hope so.

UPDATE for those scoring at home...

It seems like it was the modem. Knock on plastic, but I haven't been disconnected in a game or match since the modem was replaced.

I'm not sure what model it was, but it was/is black, with the four or five lights in a vertical row on the front. It has no reset button or power switch, just a standby button on the top that was essentially useless.