Brandon C said
The forum fits into the size of the container that is set for your page(s) in your WordPress theme.
I assume the forum you are talking about is http://www.valorforum.com/forum/ and not http://www.valorforum.com/
If there is a setting for width in your WordPress theme I would take a look at that. If not you may to change manually or try another WordPress theme.
Yes sorry, thanks for updating it for me 🙂
Mr Papa said
well sadly you are using wp twentyeleven theme… the wp core and theme devs dont believe that a full page template means all the width should be used… they believe keep the same width as with sidebar but center the content… and waste all that real estate with empty space…
I think they are wrong, but they have promptly rejected any tickets I wrote against wp on how twenty ten and twenty eleven handle full width templates…
you will either need to edit the theme or make a child theme of twenty eleven to fix that ugly behaviour in the wp theme… the offending CSS in the theme stylesheet is:
.singular .entry-header, .singular .entry-content, .singular footer.entry-meta, .singular #comments-title {
where the width is set to 68.9%
you could also make your own page template for the forum and create your own css for modifying…
I would go the child theme route so you can get twenty eleven updates… it only 2 lines in the child theme css file…
Thanks! it’s much better now, however you got me into more questions now 
1. The width is now 100%, however I still have a couple of empty cm on widht and on the top towards slideshow, I’d like to max it and leave no white space 🙂
2. Now when editing the stylesheet.. if I update the theme I would have to make the change again right? (just asking to make sure if I need to save the changes somewhere in case there comes an update) 
And thanks both of you for so quick replies! 