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See GPS for details on how to evaluate the Freerunner GPS with command line utilities.
It was found that the OpenMoko FreeRunner GPS has a long Time To First Fix (TTFF) with the SD card in the phone. This thread indicates that there is interference from the SD card slot, as without the SD card inserted it the TTFF are much shorter.
The people of OpenMoko know about the problem and are working on it. A software workaround is under testing. It turns off the SD card clock when the SD card is not being used. One will be able to use the SD card at the same time as the GPS except for the first approximately 30 seconds.
OpenMoko is also examining a hardware solution.
The following is based on Alasal's post the community mailing list.
Also note that there is a trac ticket for this issue: #1542
FreeRunner_GPS_antenna_repair_SOP Indicates that some (rare?) units may have bad soldering, and includes a guide to fix. This will presumably void your warranty.