Severe graphic issues with nameplate active

Hello, I have been playing since AA with no problems at all. But since two days (before the maj), I am experiencing an issue in game with the nameplate on :

http://imageshack.us/photo/my-images/10/oyq2.png/

If I turn off nameplate in the settings the bug is completly gone, except that if I alt+tab on windows and go back on game it often displays severe graphic bugs:

http://imageshack.us/photo/my-images/19/vbi4.png/

And this can go off if I alt+tab multiple times and finally the game is fine again.
So basically, this bug came from nowhere, I was playing just fine for a week with 0 bugs, I alt+tab and come back and this happens. I did not touch anything anywhere.
I've tried to do everything I could think of, I obviously restarted my pc, reinstalled the game, updated my graphic drivers.
But I do not know what to do to fix this, other games are working just fine (WoW, LoL, SC2 exct...) :

http://www.3dmark.com/3dm/1178031

Nothing seems to be wrong with me settings.
So I need some help

Oh my god yes. Finally found someone with similar bugs I do. I have that same issue and I have found alt tabbing helps it sometimes. It happens at the Start/Character Selection screen as well, though it seems to be flashing Japanese.

edit: I guess I should add that I do not actually have the nameplate issue. Just the weird graphical bug that happens on occasion (and seems to be temporarily caused (SOMETIMES) and fixed by alt tabbing).

Here's an example to add to the OPs:
http://imgur.com/2hf1o7w

What's your graphic card? I'm about to buy a new graphic card just because of this because i seem to be an isolated case and I don't think this is getting fixed anytime soon...

Are your drivers up-to-date? If so, have you tried reverting to an older version?

Oops. I've been busy lately so I forgot to check the thread. I have the GTX 460 SE. I was originally using the 314 driver (cause anything after didn't want to work right with my card after using a not-so-safe driver Nvidia released). I updated to the latest beta drive, I believe that's 328.6, to see if it would fix things. Unfortunately it hasn't. I just logged into the game and the graphics immediately started to mess up.

I guess I should say for the record I don't have this problem in any other games I'm playing.

Win7 64b, 8g RAM, i5-3750k

Hey guys! Since this looks to be a pretty technical issue, could I trouble you to fill out the bug template found Here? It sounds like it's probably localized to certain graphics cards, so it would be good to know what all those affected are using. Go ahead and make another post when you've got the info, and thanks in advance.