As you may have noticed, Qt apps no longer use GTK+ theme in Xubuntu 11.10. For me this became particularly noticeable in Psi+.
The problem is caused by QGtkStyle, which cannot find GTK+ theme since Xfce stores it in an unusual location (not sure why 11.04 could find it though).
More »
To make the Xfce Window Buttons applet (or simply the Taskbar, as all of us are used to call it) multi-row, add the following to ~/.config/xfce4/gtkrc (create the file if it doesn’t exist): More »