On Nov 29, 2005, at 4:34 PM, David Vescovi wrote:

I would be very reluctant about doing this. Any expansion you do and connectors you add will increase the capacitance and therefore degrade signal timing. As far as I can tell there are no bus buffers on the gumstix so fan-out is very limited. Not having the buffers keeps cost down but limits expandability.

It also means it's a little too easy to damage the CPU if you separate boards while everything's powered up.  For the next-gen gumstix we'll take a good long look at putting buffers onboard.