Our servers were running the most up to date version of the software until the 7th of April 2014 when an update came out. After the update it was revealed that earlier versions of OpenSSL (which handles SSL security certificates) were vulnerable to a problem.
On the 8th April 2014 after the issue was revealed we immediately upgraded the software to the latest which is no longer vulnerable.
From a website owner's perspective, nothing.
From a general web user you should consider changing your passwords on different sites - especially if they contact you in the next few days advising you do so. And of course, you really should have a different password for every site you visit. Software such as LastPass makes random passwords and remember them for you.