I've been trying to figure out what's been causing my GPS to fail to lock. I restored and it worked fine, but it began to fail again sometime after jailbreaking. In Maps, the GPS is able to triangulate me (large blue circle) to my approximate location, but never progresses to the blinking/pulsing blue dot that indicates GPS is fixed/locked on my specific location. I've found a few other reports from this and other forums that some users had the same problem, as a result of SBSettings. I tried this (sitting outside, open sky), and immediately after uninstalling SBSettings (and re-springing), my GPS worked again (blinking/pulsing blue dot). After re-installing and re-springing, my GPS again failed to lock on. This is all after a practically new restore, blackra1n (same problem with pwnage tool, i tried last night), sbsettings. Can anyone confirm or explain? Possible solutions?