Now I gotcha, just as I suspected (see my previous post).
You are trying to update in another directory. You are actually updating your file in /skin1 directory, which is correct, but for some reason your config.php file is relating your site to the /skin1_original.
See the difference in what you want:
http://www.kellac.com/skin1/news.tpl
And what you see:
http://www.kellac.com/skin1_original/news.tpl