asterisk users - Nov 2005 - Overlapping sounds in asterisk and asterisk-sounds

Hi all,

Just installing 1.2.0 and noticed that the following sounds that
asterisk-sounds provides are already installed with asterisk:

/var/lib/asterisk/sounds/conf-hasleft.gsm
/var/lib/asterisk/sounds/conf-thereare.gsm
/var/lib/asterisk/sounds/invalid.gsm

What's the idea behind this - a bug, intentional, something else?

Thanks and regards,
Patrick