Username or EmailPassword
Still with an update system so bad, most regular users will never even get it installed. Man, how many OOo 2.1 installs I've come across because the update mechanism is as good as useless.
As a large and steadily increasing attack vector, it's about time office suites had a Firefox / Sparkle style update mechanism. MS Office kind of does it if you use Microsoft Update to include Office checks in Windows Update, but it's still not prompt enough and too naggy.