When I right click either with Crtl+Left Mouse button or the right mouse button by itself all the open windows I have on the screen close (Finder, applications, etc.) All desktop icons disappear & reappear and only a simple finder window is opened that shows the HD's, CD-ROM drive (CD inserted), network, & any network shares that are connected. I have swapped out mice (laser) & the same results. I have 2 other partitions on the HD & if I right-click when booted into either of those partitions it works as it should (not closing windows down.) The only program that I have installed recently was StuffIt 10.0. The right-click was working before that & I believe for a bit after that. I have looked through Mouse & keyboard options & don't see anything that would cause this. I have AC installed & it scans nightly. Any suggestions?? It's so annoying.

I figured out my own problem!!! Yeah! Turns out it was a file called StuffItCM.plugin The file which you can find in the Macintosh HD/System/Library/Contextual Menu Items folder which are benign and a normal part of the system. I made a copy of the file, deleted the original & was able to right-click right away. Check out.... http://discussions.apple.com/thread.jspa?messageID=2383156? An education is what you have left after you have forgotten what you have learned.

Hmmm..usually the stuffit contextual menu extension has just been known before to do this in OS9..i certainly ran into this problem there a lot. I wasn't aware that this could also happen in OSX. I wouldn't call the stuffit extension a 'benign and normal part of the system' tho! On that point i think there's enough said....