Over the last day, I've been testing an AT&T 9800 (Torch). My experience is exactly the same as with pre-6.0 devices.
I seem to get one or two (inaccurate locations), then it stops updating the database entirely. The inaccuracy, I blame on the device. But not updating the SyncLBS table, I'm not sure where the fault lies there.
Has anyone gotten this to work reliably?