Hi - I am seeing this problem quite some time now. I really did not bother much about it. Just wanted to see if anybody has experienced similar issues. My office bldg has 10 floors and I sit on 8th, near a glass window. From my place on 8th floor, whenever I try to locate myself using Google Maps default iPhone app I get "Your location could not be determined". This happens 100% of the time from that place. If I go downstairs and move little away from the building I maps can track me down. I am not sure why is happening. I do not have this issue anywhere else. At least I have not experience it. My friend who also sits near me on 8th floor, away from the window, his iPhone works fine! We both have iP4. I am jaibroken 4.0.1 and he is not on 4.0.1. My installed JB apps are: 1. Lockinfo 2. SBSettings 3. Activator 4. iFile and AttachementSAver 5. OpenSSH. There are some minor tweaks such as clock hide, libweather, foldercloser etc. Have anyone of you experienced this issue? I have tried resetting location services but that does not help. One thing I have observed is, if I drag the map with my finger to totally different location let's say New York and then tap on locate me button, it find me correctly! The blue sphere turns gray in color though! But when I am locating myself from the same location where I am it says Your location could not be determined!