First Question is are you KEEPING all your old posts are starting from Scratch? I have found a few things like Photopost has no issues with the upgrade but theres a few tables in threads that aren't in 6.4 until you add them like Pano.. and also a session? in the w3t_users table.. most has no issues and I had no issue upgrading but all my old polls don't work anymore so I had to rebuild them.. good thing my users rarely use polls.. well until 6.4 comes out and I start seeing Questionaers like Who is the Dopiest Website Owner
