Fedora 8, mplayer, radeon 9250, and "fullscreen" mode

[Jeff Krebs]

I've installed Fedora 8 with few, if any, issues.  However, I am 
experiencing a problem with mplayer (from FreshRPMs): when in fullscreen 
mode, it only displays around 3/4rs to 7/8ths the size of the actual 
full screen.  The black borders or video image don't extend fully to the 
right or bottom; the display is shoved in the upper left corner at 0,0.  
My setup is:

- Pentium 4, 1.6gz
- ATI Radeon 9250 AGP card
- Using the "radeon" driver from xorg
- Acer AL1916W LCD monitor, 1440x900 resolution

Mplayer worked splendidly under Fedora 7.  My xorg.conf file is the 
EXACT same one I used under Fedora 7.  My mplayer prefs are the same as 
well (the "monitoraspect" is set to 16:10).  I use the xv mplayer driver 
and have libdrm and mesa-libGL installed.  Even though the display isn't 
fullscreen, it still retains the correct aspect ratio.

This issue happens with and without gdm (I set the "runlevel" to 3 under 
initab, and performed a manual "startx" with the same output result).

This problem occurs under both the AfterStep and twm window managers.

I've been very happy with the Xorg radeon driver, at least under Fedora 
7, and really have no interest in installing the proprietary drivers if 
I don't have to.

Can anyone repeat this issue?

I did notice that Steve (zephod at cfl.rr.com) had a prior post

"Problem with screen resolution in F8"

where he was experiencing a 2/3 screen with a Radeon card and LCD.  Things
sounded eerily familiar.

What can I do?

Jeff