K3b charset error

Hi! When I launch K3b, I get this error: "System locale charset is ANSI_X3.4-1968 Your system's locale charset (i.e. the charset used to encode filenames) is set to ANSI_X3.4-1968. It is highly unlikely that this has been done intentionally. Most likely the locale is not set at all. An invalid setting will result in problems when creating data projects. Solution: To properly set the locale charset make sure the LC_* environment variables are set. Normally the distribution setup tools take care of this." The following is my 'locale' output: LANG=en_US.UTF-8 LANGUAGE=en_US.UTF-8 LC_CTYPE="it_IT.UTF-8" LC_NUMERIC="it_IT.UTF-8" LC_TIME="it_IT.UTF-8" LC_COLLATE="it_IT.UTF-8" LC_MONETARY="it_IT.UTF-8" LC_MESSAGES="it_IT.UTF-8" LC_PAPER="it_IT.UTF-8" LC_NAME="it_IT.UTF-8" LC_ADDRESS="it_IT.UTF-8" LC_TELEPHONE="it_IT.UTF-8" LC_MEASUREMENT="it_IT.UTF-8" LC_IDENTIFICATION="it_IT.UTF-8" LC_ALL=it_IT.UTF-8 So what's K3b blabbing about? I tried googling about the problem but couldn't solve... :-( Thanks Luca