I did a google search on 9.10 and your graphics card. There were many problems on that old release of Ubnutu and that graphics card.
Copy this line in to the search bar on Google, and look for your self.
VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02)
I would suggest installing a later version of Ubuntu, or Mint linux. Ubuntu 10.04 is a LTS ( Long Term Support ) version.
You should not see these issues on a newer version, there are fixes for known problems.