What is the problem?

Hi,
i have changed my hosting. before that the SEO4SMF worked great. But now i have a problem.

i can't open the 2nd (3-4-5 .... ) pages of a topic. (i have make the change of QueryString.php. but don't work.)

here is a picture


1- The url showing perfect (top of the picture)
2- The url is unwanted... (the url, when my mouse is over link)

my .htaccess file is O.K. my modification is correct (i have checked all files again.)