C3NKO

I hope someone can help me with this issue. Since i've been on SL i have always been using the SL main viewer, and it worked 99% of the time great! But, since the update yesterday "5/20/2013" I have some serious freezing problems. Not only me, but my a close friend has the same problem with his viewer since after the update. I even format my pc (because it was also about time) but it's still exactly the same.. Are there others with the same problem? Or is this a known problem? Will there be a fix?