I'm not sure what I did, but none of my users can login to their accounts on my site.

I use phpmyadmin & mysql. My hosting is through Yahoo. When someone wants to login and presses "submit" , it won't go to the next page. It just shows a blank page with the login URL still in the nav bar.

Has anyone had issues like this before?

i might can look at ur scripts and see what the issue is... what language are u using?