I recently have noticed that iTunes has been dropping my 3 devices (iPad, iPad mini and touch from the left hand corner. I have tried restarting my itouch (it seems to drop that one more often) and my computer. Up until now it works but for only a short duration and then all my devices disappear again. Now even that exercise doesn't seem to work. I'm running the latest update for Yosemite and all my three devices have the latest updates also. Any suggestions out there? (I'm using a macbook)