I'm Kevin, here's my side.

[bitstarter]

I believe that actually Kevin doesn't have to give back any of it.
He purchased them in good faith. Even if the market was crashing, I would have purchased it if I saw the opportunity.

Now, even if it is on his right to keep them, IF the money belonged to MTGOX (and not a user, but actually the main fund of MTGOX, which seems to be more plausible the more I think) then I guess that for the betterment of the economy and its stability, Kevin should give it back to MtGoX.
In exchange of the devolution, MtGox should give a compensation for the act of good faith and allow Kevin to keep the withdrawn amount
If the account was a personal one, Kevin has less obligation to give it back to the owner of it. When you make the wrong call playing poker you can't undo it, if you fucked it up, you fucked it up. Period.
But still, it would be a nice gesture, and this would be totally from Kevin's generosity, if Kevin gives back partially or totally to the previous owner. A generous compensation for this gesture would be appropriate.

BUT, Kevin has all the rights to keep it and not giving it back to anyone. He would be a total asshole by behaving like that, but it is in his right.
Now, everything depends on his will.

MtGox shouldn't rollback shit.
The least thing that MtGox can do is to compensate to all users for this scandal and for they negligence/incompetence.
The leaked userbase is embarrassing enough, and that needs a fair compensation to all of us who entrusted this site with our money, and in some cases, our life savings (doesn't matter if trusting one's savings is a unsound judgement, the point here is that our trust has been broken).

It takes decades to build trust, and only one second to break it.

Usually, one never recovers full trust with a person, but doing good deeds can help to reestablish the relationship.
I hope MtGox understands here that more than profit, trust is actually the backbone of a business.
If you don't offer a deal to keep your users happy, expect a bank run.

the guy is 4 million dollars richer! 

[greyhawk]

It takes decades to build trust, and only one second to break it.

How long does it take to offer a screenfull of opinion on how to handle a situation that happened two years ago?

[proudhon]

I vote we do a rollback.  Everyone, get ready...

[Rassah]

the guy is 4 million dollars richer! 

He's not. They took his money back, since he didn't get them legitimately.

[bbit]

the guy is 4 million dollars richer! 

He's not. They took his money back, since he didn't get them legitimately.

how did they get his money back?

[marcus_of_augustus]

the guy is 4 million dollars richer! 

He's not. They took his money back, since he didn't get them legitimately.

how did they get his money back?

.... he never really "had" it ... like all those people with bitcoins in Mt. Gox, they only have an entry in a spreadsheet ... Mt. Gox holds the priv. keys itself.

"You can;t sell what you don't own", is made real by bitcoin, but so few chose to really use it.

[Bitcoinpro]

interesting read anyway

[goxed]

So how's Kevin doing?

[cypherdoc]

So how's Kevin doing?

did he ever give the money back?

[gwedo]

So how's Kevin doing?

did he ever give the money back?

and what about the man who had so much bitcoins on just one mtgox account? maybe the second secret stash of nakamoto?
"Note that from the 1,814,400 BTC awarded, 1,148,800 BTC has never been spent (63%).   As of October 2012.
I suppose (but have not checked it yet) that these are exactly the segments that belong to the mystery entity,"
I think its funny when it is like 20% of bitcoins were premined

The Verge reported earlier this year that Satoshi Nakamoto, the Bitcoin network’s mysterious founder, has an address with over one million bitcoins.
http://www.theverge.com/2013/5/6/4295028/report-satoshi-nakamoto

https://bitslog.wordpress.com/2013/04/17/the-well-deserved-fortune-of-satoshi-nakamoto/

[MoonShadow]

I think its funny when it is like 20% of bitcoins were premined

The Verge reported earlier this year that Satoshi Nakamoto, the Bitcoin network’s mysterious founder, has an address with over one million bitcoins.
http://www.theverge.com/2013/5/6/4295028/report-satoshi-nakamoto

https://bitslog.wordpress.com/2013/04/17/the-well-deserved-fortune-of-satoshi-nakamoto/

Nothing was premined.  Nakamoto might actually have 1 Million BTC, or that might be someone else.  But I know that there was no premining.  I was here well before the 1 millionth BTC was mined, and I did some of it myself.  Kindly stop spreading bullshit.

[BCEmporium]

I can second that. I was here way before there were 1 million coins too and also mined some myself.

[btcton]

I was all like "well, you were using Gox."  Then I noticed the date.

[BCEmporium]

I was all like "well, you were using Gox."  Then I noticed the date.

This is way old news, remains of the hot Summer 2011 and the bitcoin bubble. $3 to $32 and back to $3.

[noko520]

There's no winner in this argument... You found a flaw, and took advantage of it. And Mt.Gox did what any normal business would do, and that is to try and keep ALL the customers happy. Doesn't matter anymore though since this forum post is so old.

[whtchocla7e]

Nothing was premined.  Nakamoto might actually have 1 Million BTC, or that might be someone else.  But I know that there was no premining.  I was here well before the 1 millionth BTC was mined, and I did some of it myself.  Kindly stop spreading bullshit.

There was no "pre-mine" but someone ended up with a wallet with 1 million coins. I'll draw my conclusions, thanks.

[tonychow]

How much did Kevin make on transaction?

[Bitcoi2n2n]

How would he have ever been able to withdraw these into fiat anyways?

[lorix]

I wonder what the reaction would be today in 2014 if the same situation happened with the same amount of BTC involved?

[Bitcoi2n2n]

I wonder what the reaction would be today in 2014 if the same situation happened with the same amount of BTC involved?

Basically pretty much the same I guess; a lot of Anger and a lot of rage by jealous people.