I've only just realised that I'm not getting any automatic update notifications relating to apps I've downloaded and installed from the Marketplace. I'm running 2.1 update 1 on a T-Mobile G2 Touch. I did restore my apps from a MyBackUp backup after the OTA update a few months ago. They all show relevant updates if I go into 'Downloads' but I never get any automated notifications on the top bar on the phone. If I have three or four apps to update, then I do get to see a general updates message appear whilst I am in mid-update, but I never see it otherwise. My wife's G1 (running 1.6) manages to do this without any problems.