It took just under 2 hours i think for my upgrade?
Generally, no i dont really see any bugs. (other than some things on my DOMAIN machine, which i think are that they are blocked when on a domain).
It works well. Everything opens SMOOTH and FAST. Even on that older machine.
The new start menu, is not QUITE windows xp/7 ish.. I tend to like it.. a good mix between 7 and 8.
As for the VPN.. it may only be specific ones that dont work?
I know my VPN to work, works just fine.
Now that the November update is out (almost like a SP), what do you think of Windows 10? For me, the biggest new feature of that last update was they bought back the ability to have colour in your windows title bars...a small thing, but my eyes were bleeding staring into bright white everywhere, all the time! With more than a few windows open, you would sometimes forget which window was in the foreground/the active window because they all looked almost the same (background / inactive windows had grey text on the title bar instead of black).
I am still loving it, even given some of the privacy implications of having Cortana turned on.