Random 90000 error with no warning

[negiman4]

Playing FFXIV: ARR and suddenly get kicked off the Odin server with an error 90000 saying that the connection was lost. Please note that there is NO warning here. I have little to no lag ever. No rubberbanding. It's just a random disconnect and I can't find out why. I have a custom built computer with core i7 @4.2GHZ OC with a Radeon HD 7970 Video card, so I can't imagine it being my computer. I have a pretty good internet speed with a 3 Mbit upload speed and 12 Mbit download speed. Can't imagine it being that either. How do I diagnose this? Or how do I fix it? Or maybe it's a problem on SE's end? I live in eastern Montana btw. Don't know if that affects anything other than latency.

Also forgot to add that once it kicks me off, IT WON'T LET ME LOG BACK ON FOR ABOUT TEN MINUTES. It says that I'm already logged on and won't let me in until the "logout process completes". It's a huge nuisance especially when it happens in the middle of dungeons and such. It happened six times to me today and I finally got tired of it. Also my cousin Yort Tabb on the same server as me is having some crashing issues with the ps3. Not sure on the details there though.

GRRRRR MAKE THAT 7 TIMES RIGHT IN THE MIDDLE OF A DUNGEON

8 now. Just kicked me off again. I'm getting off now this is rediculous.