Well touch wood, I've not had a freeze so far on patch 2.1. But I've had so many previously when playing FFXIV and very randomly. Sometimes after teleporting or mounting and other times just walking in a unpopulated area. I've also had the issue where the game just resets back to the XMB with no warning or error messages (this tends to happen on area transitions).

I just think this is so deep in the coding for the PS3 version and happens so randomly that they will never fix it
Fingers crossed the PS4 version runs better!!