So - I've seen this problem all over the place but I've failed thus far to find an answer. I'll try and give you as much information as possible in the hope that you can help me.
When Adding or Editing a post I have no RTF like options and any text I input is invisible/white (unless I drag and drop and 'select' them). If I switch off the visual editor I can see the text fine (but don't have the options still) but If it's 'on' i have the html and visual tab...but no content.
Things wot I have done
Uninstalled WordPress completely, deleted everything in the directory and the database (okay, maybe I should have done this _last_ but I was getting frustrated.
Used IE, Chrome, Firefox - all without cookies, with cookes etc etc.
Used multiple computers.
Using the stock theme - Twentyeleven?
Cried and howled at the moon.
Disabled all plug ins.
Any advice? I _used_ to have it...and then one day...nothing.