Well, they've done it! According to the Download Counter, Firefox 3 has now officially reached the "amazing" target of 5 million downloads in the 16 hours since release. Downloads so far are rolling in at a tremendous rate of 10 thousand per second. That's using up around 20Gbits/s of bandwidth - don't we all wish we could get that! :)
5 million downloads is a heck of a lot! Even Mozilla didn't appear to be expecting this, they said in the faq: "Let's shoot for 5 million--the sky is the limit!"
For those who don't know yet, Firefox has aimed for a world record on the first day of Firefox 3's release: The most unique downloads of any software product in 24 hours. You can Download Firefox 3 Here, or check out the World Record.