My wife and I both have android phones and have added each others accounts for sharing location on lattitude but only she can see my location.  I can only see her as "unknown location", however on her phone she has an exact GPS fix and google maps and lattitude appear to be functioning perfectly.  She can see her own location and my location, but from my phone i can only see my own location and all my other friends but i can never ever see her location.  I have tried breaking the link and sending the authorisation requests dozens of times and the outcome will always be the same where she can see me and i can't see her.  Super anoying since both of us can see each others friends on lattitude perfectly but just not each other.  We even went out and bought the same phones and are on the same cell carrier, etc... Problem exists on PC version and Tablet version of Lattitude as well so its not even phone specific - the problem must be on google server.