[facepalm]
Sorry Kovid,
I searched the Gentoo Bugzilla, (and Forums, although that's more hit or miss), to see if anyone logged this issue, but I was searching for calibre. When I went back and searched for python-dateutil,
this bug was found.
Apparently upgrading python-dateutil to 2.0, (from 1.5), slotted it for the python 3.2 I have installed. Downgrading to 1.5 fixed the problem.
Thanks again..