Look in default.cfg and see what you have this setting at:
# auth directory before the program removes them. 2-6 hours is
# probably a good value.
$auth_time = 21600; # 6 hours (in seconds)
Code:
# The amount of time in seconds that user files are kept in the # auth directory before the program removes them. 2-6 hours is
# probably a good value.
$auth_time = 21600; # 6 hours (in seconds)
