yes i was just following this article
before this i was authentication samba with active directory , here i installed krb5-users package then the config went wrong so i just uninstalled the package when uninstalling all the packages got uninstalled.
this resulted in the above condition
i managed to installed some of the packages and get the system running again
now i am able to login to the system in normal mode but when i execute any command it gives me segmentation error
let me know is there is any other packages i need to install to rectify this issue
i dont think its some hardware fault as i have dual boot and the other os works fine