Its working for me... I'm on a wireless connection.
EDIT: Thats happened to me many times before. I ended up just restarting my broadband connection. Unplug everything wait 5 minutes. Plug everything back in. Start up PS3 and it should work...
Actually, COD4 was lagging pretty bad today, dont know why, but it was about 3 outa 4 games played. But my net is also really busted at my moms house as well, could be the snowy weather
I don't know if it's the PSN or just a coincidence, but I couldn't get into 1 fucking Lost Planet game. Everytime, EVERYTIME I tried to join a game it would say it's full. I refresh, and it's still there. Instantly try again, and its full. Tried it for a good 10 minutes before I gave up. Ridiculous
im signed in right now. ps3 froze on GAF eariler and after a reset i got that. i used to get it all the time. all i do is reset the router. i do get days where it is almost impossible to stay signed in though. thats really annoying.