AutoComplete not working on ComboBox

Hey Guys,

I have a form I am building with 2 Ajax Toolking Comboboxes.  I have turned on AutoComplete and tried all the different modes, Append, Suggest, etc.  Without any luck. :(  You can type, but it doesn't do anything but drop down the list, no selection, etc.

<span class="Data"><ajaxToolkit:ComboBox ID="cmbState" runat="server" CssClass="DropDown" DropDownStyle="DropDownList" AppendDataBoundItems="True" AutoCompleteMode="Suggest"></ajaxToolkit:ComboBox></span>

The only thing I can guess right now is that maybe it doesn't work since my items are databound?  Is that a possibility?

You can see specifically what it's doing at this link: http://leads.apha.com.satoritechsolutions.com/racingleads.aspx

I greatly appreciate any insite, this is my first run through with these controls.