I have a mid-2009 13" MBP, and am experiencing an issue with the touchpad. Although it does not appear to be physically sticking (i.e. it rebounds/clicks upon release), when I move the mouse, it attempts to highlight everything as if it is depressed. Or, let's say I clicked an application in the dock... now the alias tries to drag off the dock when I move the pointer. I have to tap it hard for this to release, and then it tends to start again after a few more mousing moves. I experienced this maybe 6 months ago, but the issue went away after I tapped it hard a few times. Is anyone familiar with this issue?