"software center" waiting for other mangers to close.....no apps are installed....plz help

Binary package hint: software-center

when i go to download an app....it just stays at 0% done and says waiting for other mangers to close.....thnx 4 ur help.

ProblemType: Bug
Architecture: i386
Date: Mon Dec 28 16:38:15 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
Package: software-center 1.0.2
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-16.53-generic
SourcePackage: software-center
Uname: Linux 2.6.31-16-generic i686
XsessionErrors:
 (gnome-settings-daemon:2070): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (polkit-gnome-authentication-agent-1:2205): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (nautilus:2184): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (gnome-panel:2181): Gdk-WARNING **: /build/buildd/gtk+2.0-2.18.3/gdk/x11/gdkdrawable-x11.c:952 drawable is not a pixmap or window