trailing slash is missing

Hi all,

I have integrated ckeditor in my php site. Everything working fine. But when I submit, <br/> turned to <br> and <img src='a.jpg' alt='a' /> to <img src='a.jpg' alt='a' > . So it produce invalid html error on validation. It happens in mozilla.

Is there any solutions for this? Is there any configuration change?

-Arun