View source for Session duration problem

Hi!

There is annoying problem with session duration in WackoWiki 5.5.5 - if duration of page editing is pretty long then results of editing are not saved, the banner "Welcome back, User" appears on the top and content of the page is as before editing. Session duration in the user profile is a month. By default editing duration without results saving (EDWORS) is about a half of hour. 

I changed ##$cf_gc_maxlifetime## and ##$cf_max_idle## in **class/session.php** from ##1440## to ##43200## but it increased EDWORS to about one hour, not 12 hours. How can I make EDWORS and the banner "Welcome back, User" appearing equal to session duration in the user profile?