Gumstix vs. gta02-core

The idea of using Gumstix has occurred to people before: there's the TuxPhone (http://www.opencellphone.org/) and the Homebrew Mobile Phone Club has a list of similar projects (http://wiki.hbmobile.org/index.php?title=Hardware_Projects). Moreover, the availability of GSM modules like those of Telit has changed the landscape somewhat.

Although the Gizmo Flow is a good idea, I'm not yet convinced that the Gumstix Overo boards are ready for prime time. From what I've read, the kernel build for OMAP doesn't support power management properly (http://www.gumstix.net/Hardware/cat/Benchmarks-power-temp...), leaving the components running very hot. And for those wanting to "remix" their hardware, Gumstix mainboards are not openly documented, so there's obviously a gap in the market there.