Question Forum shows half

I am having some weird issues with Kunena, I think it's related to my theme, but I just want to make sure it is. It's showing like 3/4 of the forum, but when I open an category or topic it shows completely.

EDIT

I see it actually shows fully, but can I make it like that is shows like when you open an category?
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I want it to show like it's showing on this site.

Yes, you site template is responsible for showing your Kunena forum at 75% of the total width. The general answer to the question is to use an in-browser web-developer tool (like Firebug , but you can use something else if your prefer) and the cause of the issue is usually identified in one or two mouse-clicks. You're not the first person to ask this question and you won't be the last. The problem, however, is that there isn't always a single, simple solution.

As I wrote elsewhere today, this is a community-driven, self-help resource. Every website is unique; every formatting issue is unique. Because each site is unique - each site relies on its own peculiar mix of CSS - it is not possible to provide anything more than general advice particularly if people do not give us any specific details that help us to understand their unique circumstances.

The general advice is to follow the guide given in the FAQs (see the FAQs menu tab above).

There may be other factors involved in reducing the effective width of your Kunena [component] display. For instance, you may find this article useful, too: How I can get the full width for Kunena Forum in my site?

In conclusion, if people don't provide specific information about their unique website situation, we can only give general self-help pointers.

Daft question but is your cache enabled. I had the same till I turned it off...seems like a joomla prob?