texture corruption on radeon

Hi,
I'm using an old All-in-wonder Radeon (the original version of the Radeon, 
before they started with the #'s).  I got DRI working nicely in it (compiled 
in Debian with a 2.4.21 kernel and X 4.2), but for some reason I keep getting 
these really weird "texture corruption" issues...all the colors get 
completely screwed up.  This happens in Quake 3, Enemy Territory, Unreal 
Tournament, etc.  The games all run fine and detect the 3d card and 
everything, but then they just randomly mess up and all the colors along the 
walls and floors (and sometimes in the menu system or on the hud) get all 
messed up.  The corruption usually changes each time the video mode gets 
restarted - so it might look normal for a level and then the next level looks 
really screwed up and then the next one is only slightly screwed up.

So, I was just wondering if this is a known issue and if there's some way 
around it...as it is, the games are basically unplayable.

In case it matters, I have an Athlon with a Via KT266 chipset on the 
motherboard.

Please cc me on any replies, as I'm not normally subscribed to this list.  
Thanks.
-Ari



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