5168 Server problem diagnosis

At [login to view URL] I have installed a script which I have on many other domaisn as well. normally I install to a linux red hat server with cpanel and everything works fine. Now I am using [login to view URL]'s servers. My first problem with the new server was they dont allow local session saves so I had to create a /tmp directory and edit all files to point out the new session save path. This got rid of various error messages. The only other problem Im now having is one you can see if you go into the admin area at [login to view URL] (user and pass are 'test'). If you move arounf the admin area a lot or try to save or submit changes you are randomly logged out and need to log in again. The chnages are not made and this goes on and on. I know the script is fine for a normal linux red hat server so there is somethign different with [login to view URL] setup which is causing this. It is essential however that I stay with [login to view URL] I need someone to find what it is that is causing this in their server setup and either how their server can be changed to facilitate this script or how I can change the code to facilitate their server setup. Thanks