Put it on my wife's new Dell and let her 'test' it for me...
PROBLEMS galore, none that major though.
First, getting around isn't too bad, but you certainly will need more key/mouse usage to get where you might want to go.
Lost a LOT of 'settings' in programs, all minor.
This is a Dell, and a few drivers are missing and reported to be by the W8 Advisor. Dell supposedly had them, but the USB 3.0 driver didn't install? Neither did the ATI Catalyst Control Center, which the Advisor said needed to be re-installed, but it seems it didn't 'take'?
Norton Ghost 15, license is bad, well, it isn't, but you can't enter it.
LinkSys USB network adapter, wasn't found and during reboots either connects at the wrong band or not at all, and rarely to the correct band.
I'm SURE I'll find more as we go on.
Overall, I can't see a speed improvement either.