I am currently using ATI video card which supports dual display. Here comes
the question:

if I leave the computer for more than 10 mins, the screen saver will start
itself. However, it doesn't work as it's supposed to. the screensaver only
covers the primary display, not the secondary one. coz I am using some memo
software on the secondary desktop, it is shown on it even when the
screensaver is on.

I don't know this is a bug or just the way I set it up.
But it really bugs me.