Jquery UI changed original behaviour of AT subtheme.

Hi,

I am working on a sub-theme from AT. I used the context module to switch in blocks in the various regions.
The layouts is configured as side-first|Content|side-last.
I achieved the desired behavior of Homepage = side-first|Content|side-last. ( 3 columns).
On other pages have only 2 columns, side-first|Content. ( In this case side-first on left and Content fill up to the right).
In other words I have a site where the homepage is a 3 column layout and the rest of the site a 2 column layout.

The above is work well until I install the jquery UI module.
With the Jquery UI module the above scheme doesn't work anymore.
The layout is always "3-columns". The homepage is fine, but the rest of the site is a 3 column layout with only the side-first and content containing blocks and the side-right is empty space on the page.

What went wrong? How to I get my original desired results even with jquery ui module enabled?

Thanks in advance.