i have the droid 1 with all stock apps and nothing fancy. earlier today, my pandora wouldn't load. i would try opening it numerous times and it just hangs on the main title screen. so i decided to un-install and re-install. so i went into the market and went to download and it wouldn't. i would go to the download screen, but it just hung there, the status bar not moving. so i tried downloading slacker and it was the same problem.
i rebooted my phone and everything seemed to work. pandora started downloading, and i got a couple of email notifications. then a little later i stopped pandora to do something, and when i tried to open it again, i got the same problem of it just hanging on the title screen. i took the battery out as some on here has suggested and it is still not working, the market isn't downloading, i'm not getting any of my email notifications, and i can't play youtube videos.
i can still access the internet, which is odd.

does anyone have any insight into this? any suggestions on what i can do?

your help is MUCH appreciated!