One click or two click mouse or trackpad not work

For some reason my left button mouse or my trackpad one or two click on does not open right away. Example When I go Application to pick iWeb, I click once or twice it does not open on my mouse or trackpad. I did open the left button to "Open" and load the iWeb or any other applications.

I can not figure out where or what problem was. I checked at trackpad, mouse, else where the setting all seems fine. Can you help me trouble shoot please?

It stop working when I upgrade 10.5 to 10.6 OX. Before then It works perfectly, but now for some reason not.

 

i think VMware Fusion screwed up

I think after i remove the VMware Fusion that screw up with push button. I am not sure.