I'm not sure this is a Parallels issue, but the problem coincided with the installation of build 3120, so I just want to see if others have seen this: With 3120 running a VM off a Boot Camp partition in coherence mode on my MBP 1.83 the system has twice lost communication with the trackpad button. I am able to move the cursor about, but I cannot click--either with the button or by tapping the trackpad. The loss is system-wide (not just in the VM), and the only way I have been able to restore the trackpad to normal has been to restart.