Forum forum keeps trying to go to forumpath/php5bin/blah
 

for some reason when i perfom some actions in Cpanel or access some threads, vb adds /php5bin to the url after i click submit or complete a task, and scews the next request url up completely

(i end up with http://forums.mysite.com/php5bin/user.php?do=edit&u=21 rather than http://forums.mysite.com/user.php?do=edit&u=21 when i search for user 21 for example.

I have searched in the installation files and can't seem to find reference to this string.. can anyone shed any light on this error for me?

my webhost is ************, duno if they are doing something silly on the server side of things

any help much appreciated
cheers guys and gals.