Here on SMF when you recieve a PM from someone using a different language pack then you, the e-mail you receive will be in there selected language and not your own (ex: I'm using English pack and Tim sent me a PM, my e-mail was in Dutch)
I don't know if it's like this on all sites, but I would assume so. I only have the English pack installed on my forum sooooo...
This has already been fixed in the cvs.
-[Unknown]
mmkay then... goahead and move this tooic to fixed ;)