Session cookie problem
I wrote a login script that sets a session variable when a user has logged in correctly. After that, I check on each page for this session variable to see if the user has in fact logged in. Otherwise, they are redirected to the login page.
This works for most users, but a few of our registered users have problems. That is, they seem to log in successfully, but are redirected to the login page anyway.
This suggests that they have cookies disabled. However, I spoke to a couple of them and they have the same (IE) browser settings that I use (that is, Tools->Internet Options has the setting 'Normal' for privacy and security). What could be causing this?