PHP as Apache DSO

[xrserver]

Hey I have been having some wierd problems lately where if I run php as CGI it runs fine. When I run it as an Apache DSO no buttons seem to work mainly login buttons or forgotten password buttons. If I am logged into my billing panel (whmcs) and I go into WHM and change it from CGI to DSO it kicks me out and then alll the login and buttons stop working again.

Most people will be using PHP5 which I have set to CGI but I have a few people that will need to use PHP4 as DSO because of a few functions not availabe as CGI. Anybody know whats going on here?