login inside account, but still ask to login again

sometimes when i login my directadmin, after i click on the other link eg show all user,

it ask me to enter password again.

why like this?

Session time out.

And it could be that you are using some kind of proxy that changes the ip address your server sees as you. You can check your ip address that other servers see by going to iptools.com. Refresh the page several times and if your ip address at the top of the page changes then your internet service is going through a proxy.