Also consider linking to a yubikey. https://helpdesk.lastpass.com/security-options/multifactor-a...
EDIT: DO NOT FOR ANY REASON DO THIS >for this reason I recommend writing your passwords down on a piece of paper you keep in your wallet or purse.
I cannot respond directly to Munin but anyone who suggest that is going to lead you to this http://www.telegraph.co.uk/news/uknews/crime/10276460/David-...
Someone could get a hold of your wallet and take a pic of your passwords then put them back and you'd never know you'd been compromised. And Lastpass uses the trust no one mentality so you don't have to trust them. They never see your password it's encrypted using your password and yubikey if you have one.