Kmail 1.5.1 IMAP Folders

All.. I've recently upgraded several systems to KDE 3.1.1a, part of which is Kmail 1.5.1, it appears. With KDE 3.0 and, IIRC, 3.1, I was able to create new IMAP folders from within KDE, but no longer seem to be able to do so. When I do a "new folder" operation, it doesn't give me the option to create the folder anywhere on my IMAP folder. I've had to resort to exiting kmail, firing up the Mozilla mail client, creating the folder, exiting the Mozilla mail client, restarting kmail (which then picks up the new folders ok). FWIW, I'm seeing this on SuSE 7.3 and 8.0; I haven't installed my 8.2 yet. Is this a known bug in kmail? Is there a workaround? Is there something that I'm missing? Thanks -Nick