For ages I've been getting annoyed at Xen for having to set the
Independant_WallClock setting back to 1 after every reboot, so that
NTP will work.
I even added this stuff into the config;
http://os-drive.com/files/docbook/xen-faq.html#virtual_guest_clock
And despite thatm it still got reset to 0 after a reboot. Today I
found the answer.
Today I found this in my config file:
# Set independant wall clock time
xen.independant_wallclock = 1
10 points for anyone who spots as I did the immense FAIL...