The blog at Mozillazine.org reports that Firefox 2.0 had over 2 million downloads in the first 24 hours and a peak rate of 30 downloads per second.

A little math shows that they must be talking about downloads INITIATED per second, because dividing 2,000,000 by 24 hours, 60 minutes per hour and 60 seconds per minute means that they had an average of 23+ downloads initiated per second for the whole day!

Comparing that to earlier versions (and quoting the site):

• Firefox 1.0: 1 million downloads in the first 24 hours.
• Firefox 1.5: 1.5 million downloads in the first 24 hours
• Firefox 2: 2 million (actually slightly more) people using Firefox 2 in the first 24 hours.