One of the many many things that bothered me about 4th edition was the large amounts of errata that kept coming out. Now I understand that things need to be corrected, but it seemed like the devs at the time proof read nothing and just let the community find the errors. I'm starting to look forward to D&D Next, but if we have a repeat of the last edition then it could really put me off. I play with a group who likes to play 'by the book' as much as possible and I don't want to have to have a separate binder sitting beside my PHB containing mountains of errata. I would rather they take their time and really really think about the long term effects of what certain rules may be capable of.