Here's a new one for you.
I did an apt-get upgrade on our server and then restart Mango, and.. Now I'm getting dates that seem to make sense. I need to run this again tomorrow when I"m not so tired, but I think updating the server and rebooting mango.. Fixed this?
This is odd and slightly disconcerting, but yay for how software sometimes behaves.
I'll run some more reports, but I think resetting mango and apt-get updating our Linux install fixed this (for now anyways).
Thanks for your help..