upgradation made a problem admin menu hide from 1.3.3 to 1.4.5 !

[b4uphotos]

on my site http://www.b4uphotos.com/

i upgraded version 1.3.3 to 1.4.5 latest one.


The problem arised is this that after upgradation when i uses my login for admin side then the script tell me two actions:

1. login from ie makes done but no admin menus comes there after admin login only way to know that i m logged in is this that the top general menu shows me logout[admin] link


2. login from monzilla browser says me that " Cannt login "


Please solve this problem and excuse me for my poor english sir/madem !!!