I accidentally deleted my fonts folder in home/usr/share, then I re-installed dejavu core fonts and ubuntu font family in order to be able to work with my ubuntu again.
Then I started to install other necessary font packages. I around 1 Gb of fonts. but still when I want to use internet many websites like Google, Yahoo mail, Facebook and etc, don't appear to have a nice smooth fonts which they had before.
I either missed some font packages which are important or there is a problem with font rendering which I doubt it.
That would be great if anyone help me to fix this issue.