Hi,
I have been racking my brain trying to figure this out and then I saw the "P.S this happens only when window is not maximized" in the first message.
Then I realized this depends on the size of the browser window when it is not maximized. The template is designed for 1024 resolution and if the window size is smaller than that then it will fall underneath in IE because there is not enough space for it. The sidebars have a fixed width with flexi width content area, so when this is too small to fit everything, it jumps below.
In firefox it just pushes the sidebars over the content but in IE as with the box model it drops it below. You can resize the window manually to see if it pops into place at a larger resolution, you will see there is a point when it comes right again.
Its hard to explain so I hope it makes sense
