Incomplete notification

When email arrives at my Kmail I have it playing k3b-success1.wav Nice to hear the email coming. Since shortly though it does not play the full tune but stops halfway. I hate the icecream fellows which play half of their tune, I dislike the behavior of my Suse box. I compared the used wav file (10.0) with that of a former Suse (9.3) and they are absolutely same. Somebody an idea why the tune is incomplete?