Inconsisteny problem with HTTP_Session 0.4

Hi, I'm using HTTP_Session 0.4 with the PEAR::DB container and experience a strange inconsistency problem. Sometimes the session data just gets lost although the session is not expired. I've tested my expiry check successfully with a session limit of a few minutes and than set the value to 4 hours for the production environment (it's not a high-security website). I've set idle time to 0 to avoid it being checked. Here's my code: >>> // set session parameters and start session ini_set("session.use_trans_sid", "0"); HTTP_Session::useCookies(false); HTTP_Session::setContainer("DB", array('dsn' => $dsn, 'table' => TABLE_SESSIONS, 'autooptimize' => true)); HTTP_Session::start("s"); HTTP_Session::setExpire(14400); HTTP_Session::setIdle(); // if auth object exists in session set global reference if (is_a(HTTP_Session::get("auth"), "Auth")) { $auth =& HTTP_Session::get("auth"); } // else init and store new auth object in session else { $auth =& new Auth(); HTTP_Session::set("auth", $auth); } //if session is expired destroy session and redirect to start new session if (HTTP_Session::isExpired()) { HTTP_Session::destroy(); header('location: ' . $_SERVER['PHP_SELF']); exit; } <<< I know that this is not a lot of information to work with but maybe some of you have experienced a similar situation. Has anyone used the package with a session limit of as long as 4 hours? Any hints appreciated! Best regards, Torsten Roehr