I tried the VGA Moonrise theme on WM 5 - Dell X51v .

Don't use it until they fix WM5 (I'm on rom A04, latest Dell patches as of 1/1/06).
It will trigger a battery drain on the Dell. When
installed and the unit powered down overnight the
battery went to 0 (zero) in something like 4.5
hours.
After switching back to the default theme shipped with
the Dell it went overnight with NO power drain at all.

Tried this sequence twice to verify the results.
Contact me if I can help.