OpenGL renderer string: Mesa DRI Mobile Intel® GM45 Express Chipset GEM 20090326 2009Q1 RC2 x86/MMX/SSE2
OpenGL version string: 2.0 Mesa 7.4
OpenGL shading language version string: 1.10
That is an old driver. Try upgrade to 9.10, or try using ppa ubuntu x-updates. The new intel driver may support glsl > 1.10.