Hmmm. If you go here:

<downloadcenter.intel.com/Product_Filter.aspx

and select "Linux" as the OS, the new page refers to two drivers:

1: <http://www.intellinuxgraphics.org/>

which has several recent (October 24, 2008) files for xorg and kernel
2.6.27 along with a lot of docs and what appears to also be the source
code of the driver(s), and

2: Intel(R) Graphics Driver - Linux* [IntelGraphics_060704.tar.gz]
(1697KB) at a URL too long to post here, and it's for XFree86. Ubuntu
uses xorg nowadays.