i think that all have already received the coins

Yes they only should update the wallet :

To appease the crowd, i'm releasing the wallets to proceed with the distro and relax everyone.
We will go on with the plan and keep upgrading the wallets during the next days.
Meanwhile, backup your wallet.dat (although i didn't need to) and copy this version over your old .exe

The coins will start rolling out and my buys will be waiting for you when we hit the exchanges.

http://archcoin.co/wallets/archcoin-qt-windows.zip
http://archcoin.co/wallets/archcoin-qt-linux.zip
http://archcoin.co/wallets/archcoin-qt-osx.zip

Only for remind.