Ok, now that I learned that the freeze is going to happen this Friday, it's clear that the time is too short to make the transition to my experimental Python setup.
Tomorrow I will upload a new set of python packages, 1.5.1-5, with all official patches applied and a few new fixes included; there will be no structural changes compared with the current 1.5.1-3.1, i.e. for slink we will stick with /usr/lib/python1.5 etc. Gregor