I have been using 10.9 for the past week or so and I am thinking of going back to 10.8 because this is not real stable. I expected that some of my applications may not function properly however I haven't really had much issue with that. My biggest issue is that it seems to be running a LOT slower than it ever has. I actually had to hard reset my iMac the other day because the Chrome browser froze up and I couldn't close it no matter what I did. The Activity Monitor program froze up at the same time. I have also been having issues with Chrome scrolling. I tried switching to Safari and it seems better but I do not enjoy that browser. After typing this I am thinking maybe Chrome is my only issue, is anyone else experiencing any of this?