I have had a small graphical bug, this never happened n the z4 patch. Unfortunately, i forgot to print screen and i havent been able to make it do it again. 
Basically, i clicked on another program (by hitting windows key) and on returning to lfs, all the graphics had gone extra blurry. 
 I quit lfs and restarted and still all blurry. 
I opened up ATI control panel, moved a slider up a notch and then moved it back to where it was again, clicked apply, restarted LFS and it was fine again. 
I was in an xrt on blackwood bl carpark.
These are my gfx card details;
Manufacturer :	ATI Technologies Inc 
Model :	ATI Radeon HD 2600 Series 
Bus Type :	AGP 
Total Memory :	512 MB 
Texture Memory :	628 MB 
Processor :	ATI Radeon Graphics Processor AGP (0x9587) 
Converter :	Internal DAC(400MHz) 
Refresh Rate (min/max) :	56/85 Hz 
Driver Details;
Driver Provider:  ATI Technologies inc
Driver Date:      20/08/2008
Driver Version:   8.530.0.0
I don't know if that is any help but i guess more info is better than not enough info.