We actually had this patched as of the 7th in the morning - we just generally don't announce each and every patch/security fix we apply as it's a constant every-day process. We just posted this thread up due to the overhwelming number of customers asking if we were secured against this bug.
You can regenerate the key and have the certificate re-issued if you wish but unless you're a large target I doubt you have anything to worry about. For example - if you were FaceBook I would say you definitely need to re-key. If you do thousands upon thousands of dollars worth of transactions via your SSL certificate - then re-keying is probably a good idea.
It can't hurt to do it either way - but it can create some work for you.
Thanks, Michael! Glad to know everything was taken care of in a timly manner!