Hello. I have had this problem a few times on different laptops and with different distros. This time, I have Xubuntu 12.04 installed on an Eee PC 701SD and this is what the fonts look like:
In the past I have put it down to an ISO not burning or downloading properly - or to a failing ssd drive (I install Linux on Eee PC's regularly - I 'upgrade' and sell them). But this time I am using my failsafe Xubuntu - the same disc I have used a few times with no problems. Usually I have found that (eg when I burned Zorin) the problem would occur on any laptop and I put it down to a) a problem with the download/burning b) Zorin being no good or c) the software not being 100% compatible with my machine.
As this happened on good hard drives as well as not so good ones, I am now flummoxed as to why my good copy of xubuntu should display fonts like this - with bits of letters missing. I have googled this many times and not come up with much at all, except to play with setting up fonts to correct it - but the issue is - it shouldn't do it at all! It is definitely a Linux thing - XP displayed fine on this netbook - but how and why? In this case I am using the same ISO disc which has always been perfectly fine - the same model of netbook, but obviously a different ssd. The problem is across the board - not just on web pages - although interestingly, the text of this post is absolutely fine!