strange 1600x1200 display

[Gene C.]

I have a Dell 2000FB (flat panel) display on my system and it is connected to 
an ATI 9100 adapter via the analog rather than the DVI-D connector.

With previous version of FC (even FC4T2), this worked fine with my selection 
of 1600x1200.  However, with FC4T3, the virtical display is fine but the 
horizontal seems to use a physical size a bit smaller and I end up with a 
"virtual screen" horizontally (I can see the edges only by using the mouse to 
"move" the screen).

(intended) feature or bug?
-- 
Gene