Post your xorg.conf file here. I want to have a look.
Then try out the following.
Open Terminal and type:
$ gtf 1440 900 60
Add the output at the end of your xorg.conf file.
Post your xorg.conf file here. I want to have a look.
tried it ,no changes.try this
$ sudo dpkg-reconfigure -phigh xserver-xorg
^^Did you downgrade or made a fresh install of 10.04??