Any idea what that means?
I guess, it means, you have Debian 5 Lenny, and you are
installing some extra versions of glib2 / gtk2 in order
to have two or more versions of each.
The reason to do so is not quite clear, but it may stop
Nautilus + other Gnome / gtk applications from working.
The already installed system versions :
The usual approach to have some extra glib2, gtk2 + the
gtk2 dependencies : install it all to a hideaway location.
gtk ( and other ) will find it at compile time with :
which puts /usr/local/glib2197 first in the path
instead of "default first" = /usr/lib .