CMS Problem in CMS layout when I select Style
 

I am using 3 Column Fixed-Liquid-Fixed but when I select the style for sections to be same as that for forums, the cms home page layout becomes 2 columns only and widgets on the right disappear. But when I select default layout things are fine.

Any help for solving this problem.

The 3 Column Fixed-Liquid-Fixed is excellent for setting fixed lengths of side columns. how can I use it without problems in my layout.