While doing FATEs in the Costa Del Sol area waiting for Duty Finder to get me into Baycroft, I noticed my sound was starting to get a little buggy - Music was getting quieter and quieter, sound effects weren't as prominant. Eventually the sound just completely shut off. Afterwards, my character was hardly moving at all, but I was doing commands (I was in the middle of a dungeon during this part - connected during FATEs, so I didn't want to abandon the players in there already...). Basically all I saw were the command hotbar showing me I was doing skills, but my character/monsters/other players weren't doing actions, just sliding across the screen.

I just rebooted the game (as well as my router and PS3), and ... woah I got in on my first try!

Sound is back. Everything seems to be back to normal. Weird.