The clearing house for leaked documents suspended operations earlier, posting details of how you can support their efforts on their home page. Wikileaks tweeted a Guardian story today as a reminder that their operations are still suspended.
At the very least, the hiccup in donation processing via PayPal has been resolved. According to an anonymous source, I learned after that story that both this suspension of their PayPal account and the last one were simple TOS issues. The Register’s suggestion about the anti-money laundering policies is probably fairly close to the truth if not the exact condition in question.