It seems to be a character encoding problem. Are you using firefox? I had the same problem, it can be fixed by doing the following:
Go to the menu bars on the top right, bring up the menu, click customize at the bottom of the menu.
In the customize menu, drag the character encoding widget into a spare slot in the menu, then click exit customize.
Bring up the menu again, click the character encoding widget, you will probably find it's set to unicode. Change it to western encoding. That should fix the problem for that page.
It will revert to unicode when you change page.
Assuming this fixes the problem, you can make it stick by going to Menu-Options-Content-Advanced. Change fallback character encoding to Other (incl. Western European) which is at the bottom of the list, then untick Allow pages to choose their own fonts. That should make the change permanent.
Note that this may have odd effects on pages that are correctly encoded with unicode in the first place...
