With reference to #7, I get also this message on the std output, forgot to paste it in the previous comment:
2011-12-04 18:59:49,723 - softwarecenter.backend - WARNING - _on_trans_error: org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/874771 Title: software center doesn't asks for password, and thus it can't install or remove programs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/874771/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs