mplayer screws up colormap as cursor moved into the video window

Hello,

When upgraded to 13.3-R, I have experienced a problem that Mplayer can 
cause system colormap distorted when the cursor moved into the video window.

I have seen this issue before when using the pre-built Mplayer binary, 
and building Maplyer binary from port on local machines will fix the 
problem. However, under 13.3-R, building binary on the local machine 
does not solve this issue.

On this 13.3 machine, one thing have been changed -- the video device. 
X.org is no longer supporting older video cards, such as Radeon 370, 
NV210, etc., so I used AMD APU video (Radeon HD 8570D). xf86-video-ati 
driver does not support it, therefore no /etc/X11/xorg.conf is created, 
and X is started with default configuration (VESA?), not sure if mplayer 
does not like it.

Does anyone have some clue on how to resolve this problem?

-Jin