Yes I have been having problems. I have a Radeon HD5870 graphics card in my alienware. Since the recent upday my driver stops working and recovers. When that happens I cannot see anything in viewer as it stops working or freezes black screen etc. However, you can still hear voice of nearby avi's talking on mic.
My husband used to work for dell computers and has tried updating the graphics card again, updated the motherboard, gone to the website of the manufacturer and did some research. At the current time he says that until the manufacturer does another update with patch there is not really anything that can be done.
There are no answers for this particular issue and would seem to be widespread. People have gone and re-installed, erase and reinstalled video card drivers and did not fix the problem. The graphics card is ok but he say could be conflicts with the softward causing compatability problems.
One person had updated the graphics card and the problem decreased and eventually stopped.
So I would have to say that with all the research my husband did, we are stuck at the moment.
I hope this helps, although no solution currently until updates come out.