XF 1.1 [Forbidden] 403 Error

[xpl0iter]

Can you please check this link and let us know whats wrong:
http://www.webgurubb.com/threads/html-onmouseover-and-onmouseout-help.725/#post-4440

Navigating to this link shows 403 error sometimes and some times it simply removes all the styles.

Admins are not even able to edit this post!

Screenshot: http://puu.sh/p27N

And btw, this is happening only for this thread, I suppose!
Rest of the forum works fine!

 

[Paul B]

Do you have any add-ons installed?

If so, try disabling them all.

 

[xpl0iter]

Is there any option to disable them all?
or Shall I go and disable one by one, with checking for the error each time I disable them?

 

[Paul B]

I have a problem which may be related to an add-on, is there a way of quickly disabling all add-ons?
Edit the library/config.php file and add the following:

$config['enableListeners'] = false;

http://xenforo.com/community/threads/frequently-asked-questions.5183/#post-282417

 

[xpl0iter]

I tried it, and still the issue is there! :/