We've received many, many complaints from PlayStation 3 owners who are complaining that after upgrading to firmware 1.92, they've been unable to connect to the PlayStation Network, the Store, or the Warhawk servers. The problem seems to happen immediately after the upgrade, but for some people (PS3 Fanboy writers included) the issue will crop up randomly days later.
We contacted Patrick Seybold, Sony's Senior PR manager, about the ongoing network issues and he confirmed that Sony is indeed aware of it and are actively working on a fix. When he gets more details, he said he'd pass it on to us and of course we'll let you know as soon as we hear anything.
It's frustrating when a minor firmware patch breaks something major, but it's good to know that Sony is actively researching methods to ease our pain. Put down your pitchforks and torches folks, hopefully we'll all be playing Warhawk again soon.