perhaps a warning for PRS-500 users.
I've just upgrade the library software, everything went fine, until it asked me to activate the reader. I was already on my last free activation, I kept formatting my HD without de-activating
- and now I can't read any of my old purchases!
I am uninstalling and loading up the older version to see if can get access to de-activate.
I'll let you know how that goes...wish me luck