Now that we are talking about the dictionary, do anyone know if there have been any optimizations to it (reading the post by readingglasses reminded me of this)?
It DESTROYS the battery on my PRS505. Looking up a word is maybe the equivalent of several hundred page turns. The worst part actually seems to be launching the dictionary program. It's not really a scientific analysis, but soo often have I seen my battery indicator go down when I launch it.
The dictionary is still a brilliant addition to the PRS505, though, but it would be so great if it didn't eat the battery like that.