When you try to edit your post which is long or try to type a long post and it starts "jumping" all over making it almost impossible.
The problem is Microsoft Internet Explorer version 8. This is a known problem. There are a few solutions to try.
1) Look up in your browser window for "Tools". It should be on the right near the top of your window.
Click on "Tools".
In the drop down menu you now see click on "Compatibility View Settings".
In the "Add This WebSite" text box type in this website if it is not already in the box.
Click "ADD"
Click "Close"
If the above does not work you need a real web browser. :)
I would suggest Mozilla's Firefox... it can be found:
http://www.mozilla.com/en-US/firefox/ie.html