KMail notification

[Ralph Alvy]

For the life of me, I can't find a pattern to this. I use KMail and have it 
set to notify me with a sound after new mail has downloaded. It works 
flawlessly under KDE 3.1.4. Under XFCE 4.02, however, the sound is triggered 
only every once in a while. Usually not. Does anyone know if there's a 
particular KDE application I need to make sure is loaded for this to work? By 
the way, knotify is always running.