hi all!

i'm just upgraded 7.0 to 7.1 roundcube and i can't access into webmail, i have the error "Session invalid or expired" when i try to login

here the logs...

userlogins logs seems to be ok: [23-Feb-2012 23:55:09 +0100]: Successful login for xxxxxxx@xxxxxxxx.net (ID: 4) from 81.36.137.2 <81.36.137.208>22 in session oq35mfhcb07rmmija98ahbph56

imap logs (works): [23-Feb-2012 23:55:09 +0100]: [5945] S: * OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION STARTTLS] Courier-IMAP ready. Copyright 1998-2008 Double Precision, Inc. See COPYING for distribution information. [23-Feb-2012 23:55:09 +0100]: [5945] C: A0001 LOGIN xxxx@xxxxxxxx.net xxxxx [23-Feb-2012 23:55:09 +0100]: [5945] S: A0001 OK LOGIN Ok. [23-Feb-2012 23:55:09 +0100]: [5945] C: A0002 NAMESPACE [23-Feb-2012 23:55:09 +0100]: [5945] S: * NAMESPACE (("INBOX." ".")) NIL (("#shared." ".")("shared." ".")) [23-Feb-2012 23:55:09 +0100]: [5945] S: A0002 OK NAMESPACE completed. [23-Feb-2012 23:55:09 +0100]: [5945] C: A0003 LOGOUT [23-Feb-2012 23:55:09 +0100]: [5945] S: * BYE Courier-IMAP server shutting down [23-Feb-2012 23:55:09 +0100]: [5945] S: A0003 OK LOGOUT completed

sql logs: [23-Feb-2012 23:55:09 +0100]: query(1): SELECT vars, ip, changed FROM session WHERE sess_id = 'fb41l4i16f7hpk8d17d4ka4334'; [23-Feb-2012 23:55:09 +0100]: query(1): DELETE FROM session WHERE sess_id = 'fb41l4i16f7hpk8d17d4ka4334'; [23-Feb-2012 23:55:09 +0100]: query(1): SELECT * FROM users WHERE mail_host = 'localhost' AND username = 'xxxxx@xxxxxxx.net'; [23-Feb-2012 23:55:09 +0100]: query(1): UPDATE users SET last_login = now() WHERE user_id = '4'; [23-Feb-2012 23:55:09 +0100]: query(1): INSERT INTO session (sess_id, vars, ip, created, changed) VALUES ('oq35mfhcb07rmmija98ahbph56', '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', '81.36.137.208', '2012-02-23 23:55:09', '2012-02-23 23:55:09'); [23-Feb-2012 23:55:09 +0100]: query(1): SELECT vars, ip, changed FROM session WHERE sess_id = 'oq35mfhcb07rmmija98ahbph56'; [23-Feb-2012 23:55:09 +0100]: query(1): SELECT * FROM users WHERE user_id = '4'; [23-Feb-2012 23:55:09 +0100]: query(1): DELETE FROM session WHERE sess_id = 'oq35mfhcb07rmmija98ahbph56'; [23-Feb-2012 23:55:09 +0100]: query(1): INSERT INTO session (sess_id, vars, ip, created, changed) VALUES ('oq35mfhcb07rmmija98ahbph56', 'bGFuZ3VhZ2V8czo1OiJlc19FUyI7dGVtcHxiOjE7', '81.36.137.222 <81.36.137.208>', '2012-02-23 23:55:09', '2012-02-23 23:55:09');

and.. in main.inc.php: $rcmail_config['session_lifetime'] = 10;

i don't know what's going on because all looks fine... but it isn't :( anyone can guide me with this error?