Well, I have had to revert to Windows 7 due to programme compatibility issues.
Firstly, I have just started a beta test of some business software and in 8 it wouldn't install but on 7 it worked fine. I could have used my laptop for the test but yesterday bought LA Noire from a Steam sale and that also refused to work on 8. I had trouble getting my home accounts programme registered on 8 as well.
Yesterday I reverted to 7 and guess what? No compatibility problems! I really though 8 was just a bit of a face lift for 7 but it seems that there are some changes enough to stop some programmes in their track. I will now have to rethink my decision to upgrade.