I just bought a new Mac Mini, and used Migration Assistant to move a user from an iMac to it. All went well, except a very strange behavior... the default OS X menubar icons like time, spotlight, etc (but NOT user installed app icons like dropbox or xmarks) appear and disappear in a very regular 8 second cycle.
They appear for about 2 seconds, and then disappear for about 6. This is a screenshot with the icons:
This is a screenshot without them:
This is very annoying and I have not found anything online with similar symptoms. Any ideas?