Auto complete issue with ie7

Hi all,
i was using auto complete feature in my rails app, when i used to type a
character in my text box it responds very well and displays all the
items match with that character.

The problem is when typed say letter 'S', autocomplete lists matched
items like 'success', 'soup',...etc and when we try to select 'soup'
the selected one and i always forced to select with Mouse only.

This Issue is for IE7 specific only.

thanks,
srinath

I get this also, but in multiple browsers.