Hi, I had same problem in microB, that error with lattitude. But i got it working on my n900 I am in UK, on vodafone, got latest firmvare (debranded) what I did, was install maemo-geocashing from app manager and install firefox from ovi store then go to touch.facebook.com in firefox, and dont go to places, just click icon next to your status update line, and it should works. after check in, if i wanted to check in to different place, I had to close and reopen firefox and do it again. but working fine i did not tested in microB vrowser yet, will let u know later if anyone interested prove can add me : http://www.facebook.com/mataleo