The PlayStation 3 firmware v1.93 has just been released. Currently the firmware update is only for North American users.
According to recent reports, the new firmware update only fixes minor networking bugs from the 1.92 patch. Also Warhawk should be running much smoother with the update.
For those of you having errors through the PlayStation Network on the PS3, try downloading the patch on your computer and installing it via flash drive.
Here is the link to the online patch: Firmware v1.93