Sound +ALT TAB = BSOD some time!

Hi :)

During the beta testing i have only one problem with this game, When i play is OK but when i go in my desktop and back to game, I have a BSOD(bleue screen of death) ERROR Portcls.sys.

I am on Windows 7 64BIT with a 2500K@ 4.8GHZ
8GB Memory
2x GTX470
Sound blaster fatality!

ALL is up to date!

I have 110 games on my computer and it the only problem!

the OC is stable 24H of LinX (stress test)

I play BF3, ARMA2,Saint Row3,Starcraft2,Max payne3 and no problem!

IF you have solution!
Sorry i don't see the edit button

I have read this thread

http://www.pathofexile.com/forum/view-thread/23875/page/9

Some solution is there! I have testing with the beta driver but the problem is here again! I have played 3h,5h and crash !
see this post dude

http://www.pathofexile.com/forum/view-thread/40772

i got a responce from Rory, it is a known problem.

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