Yep, too many people. Which could mean 5 for all we know.
Testing during US prime time might not be the best time.
I gave it a go during the European morning (so during the US graveyard shift) and I must say, for a first public try, it is really good already.
It still lacks functionalities, I could not move objects in my home for instance, but loading times and graphics where great in my Firefox browser.
Kudos for the developers so far.
I only hope that they will not implement it in the usual Linden Lab Style™: Half finished and than call it a day.