Tv card

Hi I have a suse 10 machine shared between 2 users. Every time one user watches tv using the tv card, something in SUSE changes the video permission(/dev/video), and the second user can't access de device(error message 'permission denied') after the first user no longer uses it. If I make a chmod 777 /dev/video, the permissions are restored so the second user can watch tv again, but there must be another/better way. Both users are in the video group. Thanks in advance....