Ubuntu :: The Minimize Button Abends The Program?

I am running the NBR using the Gnome interface, instead of the default netbook interface, but the problem happens even if I switch back to the default.Whenever I click on the MINIMIZE to desktop [v] button, the program abends (i.e. it disapppears, is NOT visible mimimized to the desktop, nor shows in the task bar or lower panel.The default buttons are in order of placement are:x [close], v (downward pointing arrowhead)[minimize to desktop] and [^ / ] (upward pointing arrowhead / square) [minimize /maximize]. I realise that on a small netbook screen such as my Asus EEE 1000 PC one might easily click on the "close" (x) button my mistake.

However, I UORPOSELY click on the down arrow button, and the current program / window disappears completely. As per my description above, I cannot find the application, so I have to relaunch it from the program menu. If it had been minimized, the system would inform me that the program was already running. Since it does not, it is a safe assumption and statement to say that the application / window / program has abendedMy only workaround is to adjust the maximixe size of the window using the rightmost button (downward arrow head = smaller window, square = fully maximized).