>>>>It is exactly the same as I've seen before in the similar circumstances.
>>>
>>>Seems like you have to ask Sergey for an 'un-ban'
>>
>>Do you think Sergey didn't see this thread yet? Sure, I ask to please un-ban me. I'm still reserving a right to give a link to it when the question demands it.
>
>
>How can I know whether he's seen the thread ?

The original thread or this thread? One of the ways would be for you to post him a message asking to see this thread.