I have the iPhone 4 and added Latitude last week. It was working fine.  Yesterday I changed my Google password. Now I can not sign into the Latitude app on my cell anymore.  It says log in using your Google account, I entered my gmail address and new password and it says the address and password are incorrect.  I also tried my old password and that did not work either. Now I have tried so many times it has locked me out and says please sign in from a web browser before you can continue signing in here.  So here I am on the web browser on my laptop and latitude signed in and is working fine here.  I o back to my phone and still get same error.   I tried uninstalling and reinstalling the app on my iPhone and still not working.  Please help.