The font on other stack exchange sites including this one looks okay to me but on my ACER netbook (that comes with Windows 7 starter kit) and particularly in chrome browser the fonts are appearing really small . Why would this happen and how can I fix this ? As I already told the other stackexchange websites are working okay in chrome. I only see the problem while viewing stackoverflow website.
You may have changed the font size by mistake when browsing Stack Overflow.
You should be able to reset it (
Ctrl + 0 normally does the trick).
An accidental zoom out by Ctrl+Scrollwheel is a more reasonable cause for this problem. Chrome remembers the zoom level on a per-domain basis (I've *.google.com always 1 step zoomed out as the default font size is fairly large on there).
You can indeed reset the zoom by Ctrl+0.