Vista Desktop Toolbar

I'm having issues with the Desktop Toolbar (The Desktop >> that sits
to the left of the clock etc..)

For some reason I can't click on any of the icons that are displayed
when you select the Desktop icon.

I can see all the icons that are on my desktop in this menu but when I
roll over the mouse they are highlighted a light gray not a light blue
like usual. When I click on them with any mouse button the menu just
collapses.

Its making having the Desktop Toolbar visible, useless.

Thanks