Marvin, I'll give that a try when I'm forced to reboot. As it is, the crazy behavior of the GPU in Yosemite makes me loathe rebooting my MacMini. When I have to, I'll boot into safe mode, then reboot again to force a gpu driver rebuild. I would have thought that Onyx scrubs that cache. It even says it scrubs the kernel cache. That's why I think this is a deeper software issue.
11/23/14 at 11:03am