Bill,
>Does anyone know if there has been some fairly recent (last couple of months) changes to the UT edit window (maybe the change has surfaced some obscure bug in IE5)?
I'm running IE5 5.00.2314 today, and in replying to your message I typed a few lines, went to preview, used "Back" button to get back to the edit window, then went back a few more screens and forward back again, and the edit window still looks the same.
I don't know what your problem could be.