Phone Appears Empty??

[Mortified]

I have a rather odd problem. When I plug my phone into my computer it shows that there is almost 2gb used but there aren't any files or folders that are displayed. When I try to assign a ringtone on the phone it says there aren't any there. When I take a picture and then go to the album to view it, they aren't there. But, when I explore the phone with Astro, EVERYTHING is there???? Any ideas on this??