This is only happening with the Zbrush app on my PC.
Some times when I minimize the Zbrush window to check my email or something, and then upon trying to maximize the zbrush window by clicking on its icon in the windows task bar, my computer completly freezes up. I cant even access the task manager to shut down Zbrush, I have to hit the power buttton on the machine and then swith it back on.
Does any one have any suggestions on what might be causing this? Thanks.