msession - giving me a hard time

Hi, I need to keep the same session between several php servers, so I decided to go with msession. Apache(2.0.47), php(4.3.3) and msession(the latest downloaded last week) are all installed on both of my Linux servers (both RedHat 7.2). When I test them independently, all seems to work well, Gooood :) Now, I am testing the interaction of 2+ servers working together. From SERVERA I create and echo the my SID using "echo session_start(); echo session_id();echo $SID;", and then I follow a link (within the same browser session) to SERVERB and then do the exact same 3 calls. They give me different $SID ??? I was expecting the same $SID for both SERVERX's, since they should get their SID from the msession server... right??? If my assumption is right, then what am I missing? they both point (in php.ini) to the same 'session.save_path' to the msession server and both have msession as the 'session.save_handler'. My Client is IE 6.0.2800. Thanks in advance, Guillaume Dupuis