Finder windows keeps turning off and on All of a sudden my Finder windows keeps disappearing and reappearing every 30 seconds or so. I restarted the computer, and emptied the trash can as some Google search suggested, but none of them worked. Any ideas? I was just browsing the web, wasn't installing/uninstalling anything.

BTW, it's a 2010 iMac with Mavericks.
I just solved it on my side, are you running Google Drive? If so, turn it off and the problem goes away. I did so on my machine and it was back to normal, the moment I started Google Drive, the Finder Windows flashed again.

You can see more people with same issue on the Apple Discussion forums