Yeah, R* hasnt got the PS3 online right from the off. At first it wouldn't connect. Then it would but would randomly disconnect for no reason. Now if you're signed in to PSN it'll freeze starting up and freeze if you try to sign-in in-game.
Wasnt missing it anyway, barely got a proper crack at it yet.
Deserved it though seeing as it all went tits-up about 5 minutes after I told me mate I was having no problems with it.