No problems yet, save for some spontaneous refreshing of a Hulu stream. But I haven't really done anything with it yet other than stream video. Oh, well, and the speakers leave a lot to be desired.
This is my first experience with Win8, and while it's not setting my world on fire, I kinda like it. The problem is, it's harder to do things that should be easy — like exit a program. I'm using ALT+F4 a lot more than I'm used to. For example, when in the Windows Store app, I can't find ANY way to quit without ALT+F4.