Very strange. When I moved to a new cache system, from supercache to quick cache, I get the mobile theme come up as a default for the page!
I looked at the settings for this mobile pack plugin and nothing needed to be changed.
If you change to desktop theme, it seems to hold it. Maybe. I seem to be having cache issues all around due to my host not redirecting the www to the main site.
my main site is http://doubtfulnews.com