The force_s3tc_enabled=true trick doesn't seem to work on Ubuntu 10.04 (lucid). I can see a tiny bit more, but the textures all fail to load still:
unsupported texture format in setup_hardware_state
failed to validate texture for unit 0.
unsupported texture format in setup_hardware_state
failed to validate texture for unit 1.
I'm guessing that's because Lucid has a much older version of Mesa (I can't compile the libtxc_dxtn library, and xorg-edgers doesn't appear to have it for anything older than 11.10)
So, if you can figure out a way to get around the S3TC stuff that would be great. I was planning to upgrade to 12.04 anyway but I was hoping to wait for the release

Thanks!