Enable pruning. Go to the data directory (see https://en.bitcoin.it/wiki/Data_directory for the default locations) and create a bitcoin.conf file. In the file, have a line with
This will prune the blockchain and make the size or takes about 2Gb.

It probably won't be released. It was never tagged. If you want it yourself, checkout the branch and build it yourself.

It depends on what you mean by "control the network". All that an attacker can do with a lot of nodes is conduct a sybil attack on other nodes. They cannot change the blockchain without any mining power, they cannot make coins move that they don't have the private keys for. All an attacker can do is feed bad information to a node and keep that node from the rest of the network.

As --Encrypted-- said, nothing can be done at this time. However, what you should do is scan your computer with antivirus software to check that there is no malware on your computer. There are viruses known to hijack the clipboard and replace an address with an attacker's, so you should scan your computer to make sure you don't have that.

You can also try to figure out who owns that address and see if you can get that person to return you your money.

I forgot to mention that 0.94.1 will build new databases. However, these databases are significantly smaller than the old ones (several Gb vs ~200 Mb). However it does not remove the old databases, so you will have to go to the armory data directory and delete the old ones yourself in order to get that additional space. The old databases will not have any effect on the new ones.

Use 0.94.1 https://github.com/goatpig/BitcoinArmory/releases/tag/v0.94.1 and Core 0.12.1 https://bitcoin.org/en/download. IIRC 0.94.1 fixes this problem.

If your paper wallet is unencrypted, your Bitcoin can be stolen. Likewise, if your backup on a USB is unencrypted, someone can steal your Bitcoin. The solution is to use encryption. Paper wallets can be encrypted just like a digital backup can be encrypted. If you go to the paper wallet tab of bitaddress.org, there is an option to BIP38 encrypt. Check that and enter your encryption password. The private key will be encrypted and can only be decrypted if you know the password.

Also, the private key IS NOT the same as a password. They are not synonymous and do not use them interchangeably. Refer to the private key as the private key and the password as the password.

The same speed that it takes to find any address.

Yes.

Yeah, I just got back to my computer where I can access the server. It looks like the server crashed. I'm currently trying to figure out what went wrong and to get it back up and running.

Edit: We're back online!!

If you have no idea what the password is, then nothing can be done and the bitcoin is lost. Otherwise, write down everything you can remember about the password and that may help you recall it.

You can also right click on the shortcut and add the -datadir option to the command in the target box so that you don't need to start it from the command line every time.

Service problem, contact their support. Users here cannot help you.

Also, you should stop using bc.i. I recommend that you get a desktop wallet like Electrum.

You could use those addresses in a script which uses RPC commands to create the transactions that fund them.

Check that your wallet has the private key to that address. Go to Help > Debug Window > Console. In the box, type
Then hit enter.

If the private key to your address is in your wallet, then you will see a string that starts with a 5, K, or L. The text will be in black. If it is successful, DO NOT SHARE THE PRIVATE KEY WITH ANYONE.

If the command fails, your will see red text with an error. If the error is something like" address not in wallet" then you do not have the private key in your wallet. In that case, if you don't have a backup of your wallet, then you have lost your bitcoin.

Edit: also, did you have a custom data directory set? The reset options button is known to revert it to the default data directory.

Try https://www.bitaddress.org. They have a bulk address part of the site. You can also download the code to the site and run it offline.

The reset options button should not affect your wallet like that, although someone in the past has mentioned that it has.

However, as long as you did not delete your wallet, all of your Bitcoin should be safe. Try starting the wallet with the -rescan option. Right click the shortcut to start Bitcoin Core and select properties. In the box labeled "target", add -rescan to the end of whatever is already in there. Make sure that there is a space between what is there and what you add. Then click OK and double click the shortcut to start Bitcoin Core. It will rescan and you should see your Bitcoin in your wallet. Rescanning can take a while. Once it is done, you can go back to the shortcut's properties and delete the -rescan.

Also, you should upgrade to the latest version of Bitcoin Core. AFAIK, the issue with needing to reindex on a hard shutdown or crash was only with older versions of the software.

They would just buy an account that is older than one year and spam on that.

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Here's an idea that could work but probably won't happen because of the complexity:

In order to have a signature, an account must be, say, at least full member and the user must give 2BTC to the forum. However, instead of that 2BTC being a donation, it would rather be a security deposit. After the user posts at least 1000 posts over the course of two years, he can get 1.5BTC back, the remaining 0.5BTC becoming a donation. However, in order to get that 1.5BTC back, the user must also not have more than 25 posts deleted over the two years, and no more than 10 instances where more than 20 posts are made in a twenty four hour period. He must also never receive a ban within those two years. Only when these requirements are met can the user receive the 1.5BTC back.

I think this would work to reduce spam, increase the constructiveness of posts, and also maintain traffic for the forum. Users are incentivized to stick around for a few years, and post constructively in order to get their money back.

But then how does a new merchant become reputable? The problem is the new vendors who want to be able to sell goods for Bitcoin but if no one trusts them because they are new, then they can't become reputable merchants. This mentality prevents newcomers to the market.

Only Full Members and up can have avatars. To get to full member, you need to post (but not spam) to increase your activity. You can only earn 14 activity points every two week period.

Also, please use the search function, this question has been asked by others literally thousands of times. Just search if you have a question and if you can't find the answer, then ask.

tl;dr pay 2BTC to get a special rank that can have a signature, everyone else either has super stripped down signature or none.