I setup a test isolating the edit controls outside of the container ComponentArt Web.UI Multipage Control that they run in in our application and the editors work in Firefox. Based on this, it looks like it might be something to do with a conflict between what the Multipage container control is doing and the CuteEdit control (e.g. style...) that is causing the Firefox issue. I'll spend a little more time on it and get back to you when I resolve.
Thanks for the help...
Jeramie
Regards,
Jeramie