The problem still persists with 2.0 RC1. I tried it after a fresh install, with no additional themes added. The
gnome-appearance max's out, and also does not shut down. I need to kill it through the system monitor.
Also, I downloaded a theme from
Gnome art, and tried to install it with
gnome-appearance. The theme only partially installed, with system lettering, such as the clock the original colour, mouse-over effects not working and so on.
Whilst browsing Synaptic for anything interesting to install, I came across
Gtk-ChTheme. I installed it. I then, again, tried to install the
BlueSpace_II theme. This time, it installed OK, and the CPU resourced used was quite low.