sorry.... yes... its a cluster server instalation.
two servers (one physical, one virtual)
back from five proxy web servers (balance functions too)
12 moodle campus, more than 30.000 users here
the temp folders in one testing campus, are sharing via cluster, but its too slow...
and... I dont know why, not work the auto create account option from login page...
the identity options have email option enable
and then, the user create by email, its selected and enable too.
at testing server (no cluster server) this option work very well, include recaptcha enable
but not work at cluster servers...
message say that I am logging as other user and can´t create new user by email auth option via signup form.
so... all the problem its cluster servers and /temp folder configuration?
thank a lot for your message
(and sorry for my english)