gae-sessions v1.06 improves memcache utilization by automatically
expiring memcache entries for keys which refer to expired sessions.
Upgrading from v1.05 is recommended if you use memcache or datastore-
based sessions. This change will not affect those who use secure
cookie-only sessions.
The latest release is always available here:
http://github.com/dound/gae-sessions
~ David