Last night my icons and folders on my desktop began to flicker. About every minute this will happen. It kinda looks like the desktop is re-loading, if that makes sense. I thought it was a Mavericks problem so I re-installed ML. I am now having the same issue on ML. I did a verify disk in disk utility and everything seems to be ok with my SSD. Any ideas??? EDIT: I just did a search on the forums and it appears to be an issue with Google Drive. I removed the icon from my status bar and the issue appears to have gone away. Hmmm interesting.