No problems here updating a desktop, surface pro, and an 8 year old HP laptop. Also installed the new Edge Beta browser on all 3 with no problems. I think that a lot of the problems go right back to when people upgraded old systems to 10. There was an option after it was done to do as "clean" install which I did on both the lappie and desktop before organising my settings and bookmarks/favourites and tool and task bars. The Surface pro of course came with 10 installed and is a wizard little bit of kit. Fingers crossed.