Today I was downloading 5 podcasts and 1 game to the iPhone and when it was done downloading I had lost all the music besides the one album I bought yesterday on the iPhone. It shows that the memory is still being taken up by the music but doesn't show in the directory. All my games are still there and everything else looks normal. This has happened once before last week. I have an iPhone 3G 16gb and it is not jailbroken.