I recently setup nagios on a rhel4 box. I read through the configuartion information and have the server running and monitoring 6 hosts (simple ping checks only.) When I access the web interface I am prompted to enter user name and password and it lets me login and view the pages.
The strange behavior happens occasionaly where I will navigate to a page and it will give me the:
It appears as though you do not have permission…
Error message however if I refresh the page the information will eventually display. It seems to be somewhat sporadic on whether or not it will display the host detail (or service detail, it really happens on every page.) On the Tactical Overview page when this is happening it will display the page but there wont be any hosts listed as up OR down.