I am running Kubuntu, which is the KDE version of Ubuntu, a debian based Linux. I upgraded (from breezy to dapper) using the standard Debian tools (apt-get). After doing so, I get the following error messages when I run gtk applications: ~ [1] gedit gedit: symbol lookup error: /usr/lib/libgtk-x11-2.0.so.0: undefined symbol: g_object_compat_control ~ [2] evince evince: symbol lookup error: /usr/lib/libgtk-x11-2.0.so.0: undefined symbol: g_object_compat_control I've done Web searches and I have tried a number of things, but none of them fix this problem. Is this the right list on which to ask this question? It seems Gtk related. Does anyone have a suggestion? I've attached some notes on some of the things that I have tried, just in case they offer a clue. Thanks for help. Dave Some additional notes follow: ========================================================= When running gtk applications, for example gedit, I get the following message:: gedit: symbol lookup error: /usr/lib/libgtk-x11-2.0.so.0: undefined symbol: g_object_compat_control This means, apparently, that every gtk application on my system is broken. Examples: gedit, firefox, realplay, epiphany, evince, SciTE, This symbol seems to be defined in libgobject-2.0.a. I ran:: $ nm -A --defined-only lib* | grep g_object_compat_control | less and saw the following:: libgobject-2.0.a:gobject.o:000036fe T g_object_compat_control the "T" means "The symbol is in the text (code) section." Then, to find out what package libgobject-2.0.a is in, I did the following:: $ dpkg -S libgobject-2.0.a which displayed:: libglib2.0-dev: /usr/lib/libgobject-2.0.a So, I did:: $ sudo apt-get --reinstall install libglib2.0-dev But, for example, gedit still does not work. Next, I did the following: 1. Retrieved a new, fresh /etc/apt/sources.list from http://www.ubuntuforums.org/showpost.php?p=1090438 2. Did another update/upgrade:: $ sudo apt-get update $ sudo apt-get upgrade But, gedit, for example, still produces the same error message. _______________________________________________ gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list