Nobody can know what is happened exactly with Zak! His account is deactivated, so we can't see and find some informations which could help us to understand! I hope he is ok and that he has not been hacked. Anyway, for the second case, he'll give us a little sign with another account. We can just hope he will be back soon.
I hope everything is okay and he just needed a break. He is so enthusiastic about dA, and always the very first to post comments. I tried to comment on his latest work last night, and that's when I discovered his account was closed. If by any chance you are reading this zak, I hope we will see you back very soon!