Via email:

The early results are in for Mozilla's attempt to set a world record for most software downloads in 24 hours – as of 11:16 a.m. PDT today, Firefox was downloaded 8.3 million times!!  We'll share an update ASAP when we have the official, finalized count from Guinness World Records.

Meanwhile, Mozilla's CEO John Lilly shares his thoughts on this amazing accomplishment in his blog:

It’s been a very busy 24 hours for Mozilla folks around the world — as our 24 hour initial period draws to a close, I wanted to put a few things into perspective. This is the first post of what will no doubt be many analysis posts, so here are a few things that have happened during the first official day of Firefox 3 life:

  • A little more than 8.3 million downloads (this isn’t our official Guinness number — that will be a little lower as we weed out over counts over the next few weeks)
  • Firefox 3 market share has grown to about 4% worldwide
  • People in around 200 different countries have downloaded, with 16 countries north of 100k copies
  • Top 10 countries so far: US, Germany, Japan, Spain, UK, France, Iran, Italy, Canada, Poland
  • 757 Parties around the world

And if you’re interested in what our network has been doing over that time period:

  • 83 terabytes served in total
  • (That works out to nearly 8 1/2 full copies of the US Library of Congress’ print collection or a million copies of the new Coldplay album)
  • At the peak, we were serving 17,000 downloads a minute (283 per second!), and saw sustained download rates in excess of 4,000/minute
  • Our peak mirror throughput during the period was 20 gigabits/sec (a huge thanks goes to everyone who helped to create our unbelievably great mirror network)

So a good day’s work by everyone involved. Like everything that’s Mozilla, this involved people far beyond Mountain View, and far beyond the borders of any one company or group.

Congratulations, Mozilla!