Bitcoin Forum

I send several bitcoins from one wallet of mine to another, using the default bitcoin client, version .8.1

The client didn't ask me to include a fee and I didn't think to add one manually.  It's now 2 hours later and the transaction is still sitting at 0 confirmations.  I understand that it may EVENTUALLY go through when some generous pool wins a block and decides to include some 0 fee transactions.  But, isn't it theoretically possible for me to simply double-spend those bitcoin, since they haven't actually be officially spent, and send the same transaction again, with a fee?

I just can't seem to figure out any way to fool the regular client into letting me do this.  I'm a little bit afraid to go searching google for a hacked client that will allow double-spending, because it sounds like the exact sort of program favored for planting trojan infections.

Is there a possibility of doing what I want?  Is there a legit tool or utility I can use to try to double-spend my coins?  Or do I just need to wait it out, and get my coins when they come?

Wait 24 hours it should be included eventually
If it really bothers you, you can try pywallet
Afaik no client allows double spending

I don't know of any trusted client that assists you in intentionally creating a double-spend.

If you know what you're doing, you can create a double-spend raw transaction, sign it, and then broadcast it.

The tricky part will be getting peers to accept and relay the double-spend so it will get to a miner.

If you shut off your client for a few days, the network will forget your transaction if it hasn't made it into a block yet.  Then the peers will relay the double-spend.

Don't worry, it *will* go through... eventually  ::)