Rick,
Gumstix mini computers allow you to run various Linux operating systems such as Ubuntu, Fedora, Debian, SuSe, Gentoo, Centos 5 etc. Our drivers have been tested under Fedora, Ubuntu, openSUSE 10.3. However since we do not directly support Linux applications (we do however provide drivers and examples), and without using the Gumstix computers personally I can not say for sure that the Pico dataloggers will be compatible.
Regards,
Richard Boyd
Crag Technologies, Inc
http://www.pc-oscilloscopes.com