I hope I'm posting this on the right place :

Recently, a new crypto-challenge was initiated on distributed.net. This challenge is like the previous RC5-56 en RC5-64, but this time with an even bigger key : 72 bits.

If you have some not-used processortime, you can help finding the key.

You can get the updated client at www.distributed.net. They are available for most common platforms and processors.

Greetings.