Dory is a ninja! I would never have thought about that.
I do remember I was having issues with different things loading at the Marketo University Days I attended for the 2013 Summit. Someone from LeadMD was leading the session and mentioned that there are browser issues. They said that Chrome was a big offender, and recommended using FireFox. I still use Chrome (its my favorite browser), but tend to access Marketo using Mozilla.