I downloaded and installed the new 2.80 System update yesterday,it's one of those under the hood updates that SONY just say fixes some problems with some games, and not a compulsory update.

I've just been reading at another forum what this update did,and that was to decrease the amount of system ram that the XMB uses.

Well the game I think it has fixed is HD.

I was playing offline most of yesterday and then switched to online.

No vista pads the BR's worked and just as fast as offline.

This might be the one ,recommend you give it a go.