instead of
Code: 
İNDİR
www.fileserve.com/file/
http://www.filesonic.com/file/
http://www.filejungle.com/f/
it should look like
Code: 
İNDİR
<a href="http://www.fileserve.com/file/">http://www.fileserve.com/file/</a>
<a href="http://www.filesonic.com/file/">http://www.filesonic.com/file/</a>
<a href="http://www.filejungle.com/f/">http://www.filejungle.com/f/</a>
in the blogger editor.

and yes you should change all older posts and do it always like this if you want your links to be clickable in blogger.