Since Internet Explorer is sometimes stubborn with cookies, I prepared a small script and I recommend every IE user to follow this procedure:
1. Go to http://www.turcic.com/forums/mycookies.php
. Check everything and click on "Delete My Cookies".
2. Go to https://www.mobileread.com/forums/mycookies.php
. Again, check everything and click on "Delete My Cookies".
3. go to https://www.mobileread.com/forums/login.php
and login with your username and your password.
Feel free to ask questions if you need help.