OK, how worried do I need to be about Conficker?

Is it really THAT serious?
Our IT just sent a memo out the other day and then I saw a report on 60 minutes.
FYI, I have a MAC and a PC

Is it really THAT serious?
Our IT just sent a memo out the other day and then I saw a report on 60 minutes.
FYI, I have a MAC and a PC