With Bitcoin Core software are legacy private keys (private keys that used to have non-zero balance but not anymore) ever deleted or pruned from wallet.dat?

Thanks.

Guys, this is a big problem. Inconsistency with propagation of unconfirmed transactions makes payment timeout mechanisms, so popular with Bitcoin merchants, horribly unreliable... Think of 15 minute timeout, the payment processor gives you to see the transaction on the network.

Something needs to be done. I am not sure, raising the number of nodes wallets broadcast through, maybe.

Are nodes of merchant payment processors listed somewhere, so we could pre-seed clients to broadcast transactions directly to the processors?

Here is the problem: when buying something with Bitcoin, usually a payment processor such as Coinbase or Bitpay is in play, and you get 15 minutes to initiate the transaction.

What I experienced today, is that even though I could see an unconfirmed transaction on blockchain.info, Coinbase failed to see it, and the 15 minute timer kept on going. Eventually the payment window timed out.

So, how does one keep this from happening?

Please note: confirmation time is not a problem here, Coinbase in particular allows up to 24 hours for confirmation to occur.

The problem is that Coinbase does not always see unconfirmed transactions.

So, would configuring a client to broadcast transactions directly to Coinbase (in this example) nodes help? And if so, how to learn the nodes IP addresses?

Thanks.

Sent them some Bitcoins four days ago, and received a pending confirmation right away. Then nothing…

A day ago emailed them, and received no reply.

Now what? Keep waiting or write it off as bad experience and book somewhere else?

Just tried purchasing something with BTC through coinbase and getting the following error: "Merchant purchases are temporarily disabled."

What is happening? It this system-wide?

How does anyone communicate with Mt.Gox Bitcoin Exchange?

Whenever I am trying to send an email to MtGox, I get it bounced back with the following message:

Delivery to the following recipient failed permanently:
     aml@mtgox.com
Technical details of permanent failure:
Message rejected by Google Groups. Please visit http://mail.google.com/support/bin/answer.py?hl=en&answer=188131 to review our Bulk Email Senders Guidelines.

There is a support button on the site, when I click on it I get a window that says “Hello, we're going to find you a support agent to chat with...” and nothing happens...

Hello, a question from a newbie.

I have setup a couple of computers with GPUs to mine Bitcoins on testnet.

I am getting over 300 Mhash/s combined rate.

If my calculations are correct at the current testnet difficulty below 43, I should be getting over 35 hundred testnet Bitcons a day; I am getting nothing. Do I understand the difficulty correctly? Could somebody please check my math?

How long does it normally take to mine testnent Bitcoins?

Perhaps something is wrong with my setup, though I get no errors.

The following thread indicates that solo mining has been broken in the bitcoin client after version 0.3.21.
https://bitcointalk.org/index.php?topic=3878.0

Is this information still current? 0.3.21 sounds like an awfully old version to use. I am on v0.8.1 right now.

Thank you.