I have a site www.michellesmunchies.net its a pretty simple DNN installation nothing fancy about it. Version 4.8.2. For no known reason my login / registration links have stopped working. I can click on them they do the javascript for the post back but then the page just reloads. I can use the url to get to the login page but typing in the login information and pressing submit doesn't work either just refreshes the page. Any thoughts?

Just a couple of "stabs in the dark"...

If you have not already, try restarting the application.  From the Host Settings page at the very botton just above the "View upgrade log..." dropdown there should be a link labeled "Restart Application".

Did you make any changes to the DNN config lately (like turning on compression)?  If so try putting things back one at a time until you find what caused it.

Do you  admin access to the server?  I have had strange things happening that have been fixed by doing an IISRESET from a command prompt.

Hope this helps,

Chuck R.

Well not sure what exactly happened, but apparently my config file was corrupted. I made a back-up of the config last week, so I just reloaded it. The odd thing is I did a compare  via text compare software on the two config files and they were identical. Which leads me to believe something happened during a DNN setting change to the config file that just corrupted it.