[Serusers] receive_msg: no mem for sip_msg

Hi, When I put these lines in ser.cfg : modparam("usrloc", "db_mode", 1) modparam("usrloc", "db_url", "mysql://ser:heslo@localhost/ser") Then I get this error each time my ser gets a sip message : ERROR: receive_msg: no mem for sip_msg (ser doesn't work and I can't have phone call) But when I change the ser.cfg in : modparam("usrloc", "db_mode", 0) #modparam("usrloc", "db_url", "mysql://ser:heslo@localhost/ser") Then of course, I get no error message... and everything works fine but there is no link with mysql. Anyone has an idea where this error comes from and how to get rid of it ? Thanks Gwen