I have this problem to, under gnome works fine everything
Linux lapipa 2.6.32-15-generic #22-Ubuntu SMP Tue Mar 2 02:24:17 UTC 2010 i686 GNU/Linux
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
kde 4:4.4.1-0ubuntu1 pulse 1:0.9.22~0.9.21+stable-queue-32-g8478-0ubuntu11
I have this problem to, under gnome works fine everything
Linux lapipa 2.6.32-15-generic #22-Ubuntu SMP Tue Mar 2 02:24:17 UTC 2010 i686 GNU/Linux
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
kde 4:4.4.1-0ubuntu1 0.9.21+ stable- queue-32- g8478-0ubuntu11
pulse 1:0.9.22~