WordPress MU

Hello friends,

My http://blogsayfasi.com cant load header of blogs.(I think)

I updated r993 . it was not a problem.
and I was working on widgets and friend list plugin.
when I fnished I see all blogs are broken.
I deleted friend list but still same all blogs ...
do you have any idea for this ?

Thanks

I uploaded back wp-includes path whitout js path. and its work now. I think there are problem in a php file in this directory. I will check all one one..