When I booted my Mac last night I got a flashing folder against a gray background. The computer started fine this morning, but when I closed the lid and opened it up again I had to reboot, and now it's persistently in this flashing folder state.
Booting while holding down ⌘ Cmd-R brings me to OS X Utilities. Running "Repair disk" from disk utilities indicates there's no problem, but I did notice that it also says I only have 16 MB free on a 110GB hard drive.
Might this be the problem? If so, is there some way to delete data from my computer while in this state, to clear enough space to boot correctly?