I frequently have this problem too. Update Manager will work until I choose to click "install the updates". Then there will usually be a window that appears briefly in the panel "starting administrative application". Sometimes a window will appear on the desktop and ask for my password, and when that happens the update Manager continues to work properly and downloads and installs the updates. However, sometimes the "starting administrative application" window in the panel disappears straight away, no password prompt appears, and when that happens Update Manager hangs (the little spinner icon spins endlessly), and must be force quit.
the whole ps afx is attached in the file psoutput here is the parts requested: //////// 8047 ? S 0:12 gksu --desktop /usr/share/applications/update-manager.desktop -- /usr/sbin/synaptic --hide-main-window --non-interactive --parent-window-id 44040195 -o Synaptic::closeZvt=true --progress-str Please wait, this can take some time. --finish-str Update is complete --set-selections-file /tmp/tmpY0aVPy 8048 ? Ss 0:00 \_ /usr/bin/sudo -H -S -p GNOME_SUDO_PASS -u root -- /usr/sbin/synaptic --hide-main-window --non-interactive --parent-window-id 44040195 -o Synaptic::closeZvt=true --progress-str Please wait, this can take some time. --finish-str Update is complete --set-selections-file /tmp/tmpY0aVPy 8144 ? Sl 0:30 /usr/bin/python2.5 /usr/bin/update-manager 8158 ? S 0:03 \_ gksu --desktop /usr/share/applications/update-manager.desktop -- /usr/sbin/synaptic --hide-main-window --non-interactive --parent-window-id 44040195 -o Synaptic::closeZvt=true --progress-str Please wait, this can take some time. --finish-str Update is complete --set-selections-file /tmp/tmpdf2ypM 8159 ? Ss 0:00 \_ /usr/bin/sudo -H -S -p GNOME_SUDO_PASS -u root -- /usr/sbin/synaptic --hide-main-window --non-interactive --parent-window-id 44040195 -o Synaptic::closeZvt=true --progress-str Please wait, this can take some time. --finish-str Update is complete --set-selections-file /tmp/tmpdf2ypM ///////// here is straces: ///////// [EMAIL PROTECTED]:~/Desktop# strace -p 8048 Process 8048 attached - interrupt to quit read(0, \\\\\\\\ ///////// strace -p 8047 > strace8047 {see attachment strace8047} \\\\\\\\\ //////// strace -p 8144 > strace8144 {I manually stopped this trace. See attachment strace8144} \\\\\\\\ //////// strace -p 8158 > strace8158 {see attachment strace8158} \\\\\\\\\ ///////// strace -p 8159 > strace8159 Process 8159 attached - interrupt to quit read(0, \\\\\\\\\ ** Attachment added: "psoutput" http://launchpadlibrarian.net/12530845/psoutput -- update-manager fails to bring up the password prompt for root privileges https://bugs.launchpad.net/bugs/187982 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs