I just discovered that when you hover your mouse over to the left lower corner to bring up the start screen has nothing to do with the location of the taskbar. If i put the taskbar up top, i still hover in the lower left corner to get the start screen thumbnail for opening it. I'm sure I'm not the first one to notice this, right?
That seems to be by design. Why should it change?
Another thing is, I'm still having corruption on the toolbar/ribbon in Windows Explorer. I thought initially it was due to the buggy video drivers from NVidia, but even with the updated ones, I still get it. But not always.
That is most definitely not a Windows problem.