I'm currently using Kubuntu 12.04 and after installing nVidia drivers and Setting resolution up to 1440x900 limit, fonts look ugly,only browser content fonts work well, I tried fixing them using Fonts-KDE contol Module, but it didn't work, Please help here is a screenshot
Open KDE Settings Manager
Then go to Application Appearence
Select Fonts section
change the Use anti-alialising option to Enabled
Then click Configure button.
In the new window, select Use subpixel-rendering and change the value to RGB
Change the hinting style to Slight.
Then remove the file
.fonts.confin your home folder. It is a hidden file. To see, that file in Kubuntu, Press
Here is a screenshot of the settings window
Logout and Login again.