I have the same issue. But, I found that if I "Delete" everything under "Browser History" (check everything: Temporary Internet files, Cookies, History, etc...) it will allow me to logon and work for a while. Then I after a bit, it stops working. So I delete everything again, log back in and work some more. This has been a major pain in the lower rear side. Oh, but I have never got the ActiveX/native console to work. But I am fine just using the Java plug-in.
Hi Everyone,  I was dismayed last Saturday when I purposely downed a server from remote knowing I would be using the idrac to bring it back up, only to find that when I tried to log into the idrac it would not accept my password.  I had to call the client and send them to the site on a Saturday night and I was pretty upset about it. After it was back up I tried several times to log in from remote and it still would not accept my password, I tried resetting it from the server OM page, but no go.  I would put in my password, and it would quickly flash "Logging In Please wait" at the bottom of the screen, and then it would just go back to the login screen. I was thinking that maybe it was a browser security problem, so I tried adding the remote site to my trusted sites and lowering the security, but it didn't help, so I tried various ie settings like compatibility mode and still no go.  This was tried on 2 different Windows 7 machines with IE9, one x64 and one x32.  Then I figured I would try Chrome instead, and it worked fine... So then I tried an XP virtual machine with IE8 on it, and it also worked fine.  So - it seems that IE9 is the culprit. I called into the Systems Managment team and we tried enabling some active x controls in the trusted zone, but it didn't help and he basically told me that IE9 doesn't play well with the drac's and they are working on a firmware update to resolve the issue. This is all fine and I accept it, since I know I can get in with another browser if I had to, but has anybody actually managed to get it working with IE9?  
Can't log into idrac6 Web Interface using IE9