we have tried to install a new cam 6.9 on linux and then on windows , but we encontered the same problems .
Cannot login on the web gui java web console using root with root password on linux and Administrator using Administrator password on windows . We have run some debug on linux and found that pamlogin called by the java gui report that cannot find user login and password .
On linux centos 6.2 standalone not in a domain we have found the problem , you need pam library for both 32 and 64 bit .
(the default on 6.x is 64 bit , on 5.x the default is both 32 and 64) (the server with the previous version CAM was a 5.x)
Resolved also on windows server you MUST use the domain Administrator password and not the server login Administrator password.