A week ago Windows 8 performed an upgrade and asked me to reboot to install the updates. That was the last I saw. The PC did not come up again only to ask me to perform a repair which did not help at all.
So I reinstalled with the Windows 8.1 preview and I must admit, it looks way better. I have a 3 monitor setup and finally I can work with apps and desktop applications at the same time. This has not been mentioned before, but 8.1 has improved the usability on a multi-monitor setup significantly too. That aspect alone was worth the upgrade for me.
Unfortunately it did not come for free. Several applications now cannot be installed or only work partially. Most importantly this is Bitdefender AntiVirus which refused to install completely, even in any of the compatibility modes. Alkohol 120% and DaemonTools also only work partially as the SPDT driver currently cannot be installed on Win 8.1.
Sadly, I'll probably return to Windows 8 soon, because those the antivirus and Alkohol are too important for me. I liked 8.1 much better than 8.
@msr02816: I liked Windows 7 also more than Windows 8 and honestly I even liked XP more than Win7. With the UI updates of Win 8.1 it gets closer to Win7 again. If only these incompatibilities would be gone ... - it's a matter of time, I know. Unfortunately, some of us do not have the option to choose their OS freely. At work we rely on Lync for the office communication and at least Win7 is required for that. Since I do not have a license for Win7, but I do for Win8, it left me no choice. (Before you ask: no, the Win8 license does not allow me to install a Win7. This is only allowed if upgraded from Win7 to Win8). BTW I use a dual-boot with Linux for my own pleasure