Stef> Something like a multi-virtual machine on a web server, that you Stef> launch in the night, and in the morning you would get a full Stef> report of all problems on the specific OSs (probably someone is Stef> going to say that this is impossible, but fortunately I'm not Stef> hindered by any knowledge ;-)
You could run Buildbot on a bunch of virtual machines on your computer (assuming your computer is x86 and its OS is supported by something like Sun's VirtualBox or VMWare's offerings). Skip -- http://mail.python.org/mailman/listinfo/python-list