Here are my tests so far regarding the account problem :
I use 3 methods to create accounts:
Method 1 (private bot) - 50 accounts, 4-8 videos on each, uploaded with MVB (API method with my own API key)
Method 2 (private bot 2) - 50 accounts, 3 videos on each, uploaded with MVB (API method with my own API key)
Method 3 (hand made) - 1 account, 1 video, uploaded manually
Results :
Method 1 - 48 accounts dead after 27 hours (dont ask me how those 2 survived, i have no ideea)
Method 2 - all accounts dead after 27 hours
Method 3 - account dead after 27 hours
Keep in mind that every account has it's own IP assigned to avoid linking them together and every video has a different link in the description.
I don't think this has something to do with MVB since the hand made account died just like the other ones, it's just YouTube going berserk on us, i'm pretty sure that those playing with youtube long enough have seen this before

... i did at least twice in the past 2 years
If anyone else has done tests like this, please share.
Thanks.