Hellllp! Can't get it to remember Logon

I'm a total noob to configuring this stuff on Linux, so please bear with me if my question is stupid.

I have got the portal all setup (Ubuntu, Tomcat 5.0.28, everything right from the package provided by eXo), everything seems to be working beautifully. and when I enter logon credentials it seems to log me on, and then promptly forgets who I am, takes me back to the generic portal page, and there is still a "sign in" button up top.

When I try and log on to the WebOS same thing happens, I enter "valud creds" and it takes me to the generic anonymous portal page, and seems to have forgotten who I am.

I tried to enter "bad" creds and it does kick those out as being bad.

I am sure this is just a crazy configuration issue on my part being new to the technology. but can someone help a fella out?

thanks in advance.

Leigh.