Shortly before 2 p.m. PDT (1:52 p.m.), the iTunes App Store hit 1,000,000,000 apps sold since it originally just nine months ago. It's by no means perfect, but it's still a significant milestone for the store, the iPhone (and iPod touch) and Apple. It didn't come without its glitches. The iTunes Store was showing up as unavailable for several people off and on throughout the afternoon. Even Apple itself jumped the gun a little bit by having its after 1 billion page already available early Thursday, in addition to the counter in iTunes showing the 1 billion mark before the official counter on Apple's website.