I browsed trough the How-To: When Cookies won't do it and I have some questions. How much speed do you really gain from using file for data marshaling? Would it be a good idea to use Object Pooling (pre created objects) to speed up a session object solution? The reason I don't like the file based solution is that I won't scale with ZEO but a Object solution would, right? There would also be possible for cool stuff like session failover and long time session (much list version but individual and perhaps with a limited scoop) Another reason is that I like the concept of the ZODB, why think in a non ZODB way? Regards, Johan Carlsson torped johan carlsson birkagatan 9 113 36 stockholm telefon 08-32 31 23 mobil 070-558 25 24 fax 08-32 89 47 johanc@torped.se