[Calash]

I really like the front page, it is simple and gets the necessary information to the visitor. A blurb about the site and points of registration would be helpful to draw in new members.

The logo could use a bit more customisation. A letter a different color or something simple to make it stand out in peoples minds.

The forum has an alignment issue in IE6, the green bar is off to the left a bit. The whole forum also has a funky scroll bar on it that really disconnects it from the logo and the rest of the site. Not sure if that is an Iframe or a div with an overflow but it just does not look right in my eyes.

The forum it's self is default, you should get this to match the rest of your site.
Every forum is also showing me the locked Icon..something I do not normally see on a vB site.

You have a lot of forums about a wide range of topics. From the URL I got the impression the site was about Web development, but looking at the forums I see very little of that and more general chat stuff.

It is a good start so far