I use Apache1.3/Php4. The session files stay (thus the sessions) after the session is supposed to exire. It's just a local server i use for testing but it's annoying anyway. => HELP!
Don't worry about it, man. They'll get flushed eventually. If you're running a webserver off a 50MB disc, then maybe you should upgrade the disc, not use sessions, or shutdown the webserver.