CMS How to disable the 50 characters line warp in vBulletin?

[محروم.كوم]

Hey there.
I bought a vBulletin license yesterday and installed the newest version of vBulletin (4.0.3).

Now, I think there's a bug with the line wrapping or something, I've searched everywhere and couldn't find a good solution for this. The problem is that there is a 50 characters limit.

Screenshots:
http://i50.tinypic.com/300a4o4.jpg // When I edit a thread.
http://i50.tinypic.com/25g6qmc.jpg // When I post a new thread.

Thanks in advance. __DEFINE_LIKE_SHARE__