He tried to connect as Navarro_Hudson, which is the same name as the banned player. Combined with the identical IP, it's easy to see this is the same person. Now to answer the questions..
When did I got banned?
28/10/11 15:53
Eventhough I'm not sure I did, can you guys be really sure I did hack?
Yes, we are sure that a player with the same name and IP as you hacked and we are sure you are that player.
Well, since this is an unban request: Could I be unbanned from this server
Since you hacked, no.