We had earlier announced that we are working on the outages and slow load times in Muziboo that were caused due to the surge of growth and our resources being pushed to their limits. We have fixed it all now. If by any chance you still see any of those ‘503 errors’ please do not hesitate to inform us. You can always shoot a mail to support@muziboo.com

Also, if you are an RoR (Ruby on Rails) enthusiast you will have fun reading this post on Muziboo dev blog on how exactly we went about scaling.