Server-side session cleanup...

Hello, Would someone mind explaining to me the intricacies of server-side session cleanup? As I understand it, session's are cleaned up based on the gc_probability and gc_maxlifetime vars. The gc_probability variable determines when the sessions will be cleaned up based on incoming requests for new sessions (that part I get). I don't quite understand the gc_maxlifetime variable. Does it clean-up all sessions older than the value specified in gc_maxlifetimes regardless of whether they've been used recently, or only sessions that haven't been touched for that period of time? Thanks for the help. Ryan Robertson Palm Development Support