A DigitalPoint Forums thread reports that all blogspot, blogger, blogs were not accessible starting around 5:20 am (EST) this morning. The first reports of the blogs coming back online was at 6:55 am. So the downtime was at least 1.5 hours, but probably more.
I have not seen other reports of this outside in the press yet. So nothing more to report to you now.
Update: The blogger status site said;
Blogspot was down for about 30 minutes. It has been restored now, but some blog pages are still returning an error page. We are working on resolving the problem.
Update, 4:25AM: This issue has been fixed.
Um, this was longer than 30 minutes!
Forum discussion at DigitalPoint Forums.