Don't know if anyone noticed, but 3.1.0-rc9 (patched) is out now.
LINKAGE: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.1-rc9-oneiric/
Seems to be working fine in UbuPP... ;)
vindsl@Zuul:~$ echo && date && lsb_release -sd || cat /etc/*release && uname -s -r && unity --version && echo && /usr/lib/nux/unity_support_test -p -f || echo && dpkg -s mesa-utils && echo
Sat Oct 15 03:10:40 MST 2011
Ubuntu precise (development branch)
Linux 3.1.0-0301rc9-generic
unity 4.22.0
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce 7600 GT/AGP/SSE2
OpenGL version string: 2.1.2 NVIDIA 280.13
Not software rendered: yes
Not blacklisted: yes
GLX fbconfig: yes
GLX texture from pixmap: yes
GL npot or rect textures: yes
GL vertex program: yes
GL fragment program: yes
GL vertex buffer object: yes
GL framebuffer object: yes
GL version is 1.4+: yes
Unity 3D supported: yes
Package: mesa-utils
Status: install ok installed
Priority: optional
Section: x11
Installed-Size: 132
Maintainer: Ubuntu X-SWAT <ubuntu-x@lists.ubuntu.com>
Architecture: i386
Source: mesa-demos
Version: 8.0.1+git20110129+d8f7d6b-0ubuntu2
Replaces: xbase-clients (<< 6.8.2-38)
Depends: libc6 (>= 2.4), libgl1-mesa-glx | libgl1, libx11-6
Description: Miscellaneous Mesa GL utilities
This package provides several basic GL utilities built by Mesa, including
glxinfo and glxgears.
Homepage: http://mesa3d.sourceforge.net/