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some xfce related packages i installed from the building page:
Package Dependency(-ies) Optional Dependency(-ies) 
xfce4-dev-tools autoconf, automake, intltool, pkgconfig   
libxfce4util glib   
xfconf libxfce4util, dbus-glib   
libxfce4ui libxfce4util, gtk+, xfconf libstartup-notification, libgladeui 
libxfcegui4 libxfce4util, gtk+, libglade libstartup-notification, libgladeui, xfconf 
exo libxfce4util, gtk+, perl-uri   
xfce4-panel libxfce4ui, exo, garcon, libwnck libstartup-notification 
thunar libxfce4ui, exo, libpng, gtk+, glib libexif, dbus-glib, gconf, libstartup-notification, freetype, libjpeg, libxfce4panel, xfconf 
xfce4-settings libxfce4ui, exo, xfconf, dbus-glib, libXi, libXrandr libXcursor, libnotify 
xfce4-session libxfce4ui, perl-xml-parser, libwnck, dbus-glib gnome-keyring, gconf 
xfwm4 libxfce4util, libxfce4ui, libxfconf, dbus-glib, libwnck libstartup-notification 
xfdesktop libxfce4ui, xfconf, libwnck exo, thunarx, garcon, libnotify 
xfce4-appfinder libxfce4ui, garcon   
xfce-utils libxfce4ui dbus-glib 
gtk-xfce-engine-2 gtk+   
I also have some extra packages installed:
gnome-icon-theme-3.1.4
icon-naming-utils-0.8.90
then, i use startxfce4 started xfce desktop environment successfully, but lost many icons. I took a screenshot here 
But, what should i do and resolve such problem?
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