Hey, when did that happen? Key Caps in OS X now will show your typing in other applications. It used not to do that.
Answer: It's still broken, it was just some weird window activation problem (of the sort I see about 100 times a day on OS X, sigh) that caused it to work for a few minutes.
Running out of space on your OS X root partition and don't know where it went? Get WhatSize. It's a one-trick application, sorting your files by size, but it works wonderfully.
Among the space-hogging items it found for me were Magic Mouse Discus, bundled with Toast 5, with installs almost 200 MB of graphics; and Maya, which installs 50 MB of files in /Library/Application Support/AliasWavefront (even though the application installed on another disk). Now I'm back up to 425 MB free.
6:11 PM