Undefined property errors in httpd error log

I receive constantly the following and other Notices due to not explicit defined variables.

Thanks,
Ulf

[Mon Oct 6 14:09:43 2008] [error] PHP Notice: Undefined property: color in /home/storage/www/www.teamhandball.com/public_html/calheat/drupal-6.3/si
tes/all/modules/shoutbox/shoutbox.module on line 1042
[Mon Oct 6 14:09:43 2008] [error] PHP Notice: Undefined index: linkattributes in /home/storage/www/www.teamhandball.com/public_html/calheat/drupal-
6.3/sites/all/modules/shoutbox/shoutbox.module on line 312
[Mon Oct 6 14:09:43 2008] [error] PHP Notice: Undefined variable: img_links in /home/storage/www/www.teamhandball.com/public_html/calheat/drupal-6.
3/sites/all/modules/shoutbox/shoutbox.module on line 315
[Mon Oct 6 14:09:43 2008] [error] PHP Notice: Undefined index: linkattributes in /home/storage/www/www.teamhandball.com/public_html/calheat/drupal-
6.3/sites/all/modules/shoutbox/shoutbox.module on line 312
[Mon Oct 6 14:09:43 2008] [error] PHP Notice: Undefined index: linkattributes in /home/storage/www/www.teamhandball.com/public_html/calheat/drupal-
6.3/sites/all/modules/shoutbox/shoutbox.module on line 312
[Mon Oct 6 14:09:43 2008] [error] PHP Notice: Undefined index: linkattributes in /home/storage/www/www.teamhandball.com/public_html/calheat/drupal-
6.3/sites/all/modules/shoutbox/shoutbox.module on line 312
[Mon Oct 6 14:09:43 2008] [error] PHP Notice: Undefined variable: img_links in /home/storage/www/www.teamhandball.com/public_html/calheat/drupal-6.
3/sites/all/modules/shoutbox/shoutbox.module on line 315
[Mon Oct 6 14:09:43 2008] [error] PHP Notice: Undefined index: linkattributes in /home/storage/www/www.teamhandball.com/public_html/calheat/drupal-
6.3/sites/all/modules/shoutbox/shoutbox.module on line 312
[Mon Oct 6 14:09:43 2008] [error] PHP Notice: Undefined index: linkattributes in /home/storage/www/www.teamhandball.com/public_html/calheat/drupal-
byte 8963