The problem started a few weeks ago when I suddenly couldn't join online games on COD5 on the PS3. It wasn't giving me any trouble before; it just suddenly happened. The game would say "getting match quality" forever but never find a game to join. When I try to host, I just sit in the lobby forever and ever but no one ever comes. I know it is not my internet connection because I can still access the web browser on the PS3, and the computer works fine too.
It is not the PS3's problem either because when I switch to public network (linksys), everything's fine.
So I disconnected the Ooma hub, using only my router for the PS3, and it works. I can join and host games.
If I reconnect the hub, it stops working again. This causes me to think that Ooma is somehow blocking it.
However, this problem SUDDENLY came a few weeks ago (I had Ooma for a while), so did Ooma undergo any updates that could cause this?
I think the problem is similar to yours with a different device. My guess is that in the new version, ooma started to--in some ways--interfere with other devices on the network: compete for service on a particular port. However, only ooma engineers can tell.
Your only option is to email/file a bug report with some of ooma mod. in this board. Calling CS will offer little help unless you get to level 3 support, i.e talking directly to an engineer.
I am a complete newbie in networking, I don't even know what subnet means.