Looking at top today, I found this interesting bit:

 4143 glandium  20   0  992092 578976  16340 S   0.0  7.1   8:06.24 caribou

That's near 600MB RSS. That seems a lot for something that is described as
a "Configurable on screen keyboard with scanning mode", which I never
activated voluntarily and shouldn't even be running in the first place.

Mike