Sorry, things have been a bit crazy lately--few people posting on the forums, but I'm trying to change that!
The 2009 hardback copies should be identical in content to the current edition. The key thing to check is if the thieves in the 2009 versions you're being offered, use %-based thief skills. If they do that version is outdated. If they use a 2d6 system for thief skills, they are the same as the current version of the game.
Jason Vey, President Elf Lair Games Web: www.elflair.com e-mail: elflair (at) grey-elf (dot) com "I will say this just once: GARY NEVER USED MINIATURES!!!" --Old Geezer, RPG.net