I should explain better: Once, in one of my mod_perl files, I did this trying to delete all the data from a session: tied(%session)->delete I know is wrong. Anyway since I did this I can't request any page from the server. I removed the code from where it was. The error I see in the logs is: [error] Can't locate object method "populate" via package "Apache::Session::DBI" at /usr/lib/perl5/site_perl/5.005/Apache/Session.pm line 368. Alberto.