Maybe I'm on the wrong skin/theme. But it seems to be very thin. Even the ad banner up top stretches off the forum. I'd suggest adding 100 pixels or so to the width, just so it aligns better with the ad banner up top.

I think I'm using the default theme, when i first joined a while back.

I use a widescreen monitor so it looked fine for me...i see what you mean though when i lower my resolution. I've made it a bit wider so it *should* be better now.