Problem with package installer nad update manager
I am having a problem with installing any new package or upgrading with the update manager. When I try to install a package or upgrade my Ubuntu 7.04 to the latest 7.10. I am notified that only one package manager can run at a time and that I must manually run the program within the terminal to reconfigure the commands "dpkg". I am quite new to linux and have no idea on what I'm supposed to do in such a situation. There is no visible package installer running so I don't know which on e is causing this error. I am notified that it can be the Synaptics, Aptitude, or etc. that I must close in order to install yet I don't see them running. Can someone assist me in resolving this problem? It would be greatly appreciated. Thanks!