I am not able to install applications in my fedora 13 using add or remove packages utility. When I select some packages to install it was trying to install the packages after that I am getting an "Authorization Failed" error and it is not installing any packages. But when I launch the application as root using command "gpk-application" I am able to install applications. Please help me out in figuring out what went wrong. I have logged in as normal user. Earlier when I use to install packages it use to ask me for password but suddendly it stopped asking me password and I am getting an "Authorization Failed' error. Please help me to resolve this issue. I have been struck from past 3 days.