|Photo credit: Mario Sundar on Flickr|
First up is to say that LinkedIn are providing updates on this, as they should, the latest one is here. This does mention "hashing" and "salting", and you can find out more about these terms in this short post by Peter Vidani.
You can get some advice on finding out if your password was compromised over at Avinash, this post includes a link to a tool that you can use, but as this involves typing in your password, make sure this isn't a password you're still using anywhere. You've changed your LinkedIn password anyway, haven't you? Haven't you?
Finally, Troy Hunt has some useful advice on managing your passwords generally, as well as dealing with this specific incident.