On the Nexus S, the walls show horrible clipping errors and there's no bilinear filtering. Are you forcing the software renderer somehow?
I do not enforce software rendering. I have been sent an image with this issue on a tablet. It seems that about 10 percent of devices are having this issue. I can fix it by turning off Depth Testing but then things don't appear in the correct order sometimes.
I will do 2 updates before the new year. I hope to get the fix in for one of the updates. Sorry.