I am using Ubuntu 9.10.
Now I can't open Synaptic, it says -
Failed to run Synaptic as root
Unable to copy the users XAuthorisation file
When I try to install from deb file, it says - The software index is broken.
And when I try to open Software Sources, I get the message-
Failed to run /usr/bin/software-properties-gtk as user root.
Unable to copy the user's Xauthorization file.
And the terminal displays -
$sudo apt-get install ifstat
Reading package lists... Error!
E: Problem parsing dependency Depends
E: Error occurred while processing liblaunchpad-integration1 (NewVersion1)
E: Problem with MergeList /var/lib/dpkg/status
E: The package lists or status file could not be parsed or opened.
How do I install/remove packages.