Hey- I'm running Mac OS X, version 10.5.8. I've started having a problem which isn't really all that important, but would be nice to resolve. My menu bar at the top has been displaying numerous glitchy behaviors: Icons overlap each other. Some icons keep the dark grey background (as though I were clicking on them) constantly. When using a pull-down menu such as the one used to switch users, I have to click quick because it disappears in a moment. Some items won't show up at all until I click the space they ought to be in. Often the drop-down menu is out-of-place, I can see the drop shadow but only the upper corner of the menu. Anyone have any idea why this is happening? Are they all different problems? My OS behaves itself quite nicely the rest of the time.