Hello. My session data lost when I try to set expiration time to 0 (in 'session_data' object placed in 'temp_folder'). Any new objects in session do not live longer than several minutes (or ever several seconds). It is for Zope-2.6.0 and 2.6.1. In Zope-2.5.1 everything ok and objects stored in session while browser works. Has anybody such problem? Does know anybody why this thing happens?