This. I hope the Synereo team will seriously take this route into consideration. 

I confirm that I have got my BTC refund today (minus SebastianJU's fee, as specified in his post).

I have got a claim confirmation from SebastianJU, too, after sending him my PM, signed according to his instructions.
Waiting for refund.
The instructions are here:
https://bitcointalk.org/index.php?topic=1623519.msg16980778#msg16980778
Additional helpful information on signing the message is here:
https://bitcointalk.org/index.php?topic=990345
Really, it's not that hard to do.

BTC exchanges in Poland do not add VAT to the value of the trade and never did.
(It was still a potential threat, though).

Perhaps it may, but I rather doubt it.
Believe it or not, but when I wrote 'some confidence in Bitcoin' I meant literally Bitcoin and not any particular exchange or rehabilitation project.
Right now, Bitcoin does need as much good public relations as it can get, and a quick and full compensation for the small-fish victims of the MTGox disaster would constitute good PR indeed.
A large group of angry customers who get back their funds means many less people who have (somewhat understandable) motivation to actively criticize and oppose the whole Bitcoin project.

Besides, the idea of compensating smaller creditors with some preference over bigger creditors appeals to my sense of justice. (Despite the fact that I do not belong to the former group).

I second this motion. This would lower the cost and effort of the subsequent operations related to creditors' equity.
Moreover, such action might help to restore some confidence in Bitcoin amongst many (and possibly: not well-off) individuals who tried to buy a fraction of bitcoin out of curiosity and got Goxxed instead.

Well, you are not the only one who experienced the 'negative balance' bug in Bitcoin Builder.
Though in my case Josh responded to my e-mail in less than 24 hrs and fixed the problem.
(Other than that, everything went OK for me, including withdrawals.)

And when there was cheap slave labor. A worthy example of 'free' market capitalism, indeed.

Danny, the above remark has certainly piqued my curiosity.
Could it mean, that if/when required regulations are met, you might consider converting the current "profit shares" into the fully-fledged equity shares?

The delays for domestic PLN withdrawals are as bad as for SEPA withdrawals. Or perhaps even slightly worse.

They come from different account numbers (but have the same bank/branch identifier, of course).
Domestic PLN withdrawals have currently even longer delays than SEPA, though.
Still, they might be in the same queue and experience some additional problems (like lack of PLN in stock, for example).

Same situation here. I have been waiting over 3 weeks now for my three-figure EUR transfer from MTGox.
So it looks like that euro transfers do not fare much better than USD currently.

Nope, he is the guy who terminated the Roman empire in the 5th century.

Somehow I suspect that oda.krell knows that and he is just pulling your leg...

You're right, thanks for the tip.

It is still "502 Bad Gateway" to me...

My German is not adequate enough, but it is clear that the bank blocked Simon's account for 3 months on order of the Polish public prosecutor.
The prosecutor did this after receving information from the GIIF - General Inspector of the Financial Information (= main Polish AML authority).
The GIIF in turn acted upon documents from the German (Bremen) public prosecutor and the German police.

10 days is nothing, really. PLN withdrawals to Polish accounts take usually 2 or (more often) 3 full weeks to complete.

This IBAN number seems to be incorrect.

I believe you understand it wrong. The Bitcoin-qt client always keeps 100 addresses in reserve, regardless of the walet being encrypted or not.