checkbox-gtk leaves no time to speak into the micro

1) Ubuntu 9.10 - Karmic Koala

2)apt-cache policy checkbox-gtk
checkbox-gtk:
  Installiert: 0.8.4
  Kandidat: 0.8.4
  Versions-Tabelle:
 *** 0.8.4 0
        500 http://de.archive.ubuntu.com karmic/main Packages
        100 /var/lib/dpkg/status

3)I was trying to test the non-default audio-output and expected it to work ;)

4)but it did not. no sound was coming out of the speakers.

ProblemType: Bug
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: flo 6517 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf0600000 irq 22'
   Mixer name : 'Conexant CX20561 (Hermosa)'
   Components : 'HDA:14f15051,1179ff56,00100000'
   Controls : 14
   Simple ctrls : 7
Card1.Amixer.info:
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xf0210000 irq 17'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100000'
   Controls : 4
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined
   Playback channels: Mono
   Mono: Playback [off]
CheckboxCommand: alsa_record_playback
CheckboxData: when i was clicking on "test", it stopped instantly. i had no time to speak into the microphone.
CheckboxTest: alsa_record_playback_alternates
Date: Sat Oct 17 14:35:28 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Alpha amd64 (20091013)
NonfreeKernelModules: fglrx
Package: alsa-base 1.0.20+dfsg-1ubuntu5
PackageArchitecture: all
ProcEnviron:
 SHELL=/bin/bash
 LANG=de_DE.UTF-8
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: alsa-driver
Tags: checkbox-bug
Uname: Linux 2.6.31-14-generic x86_64
XsessionErrors:
 (gnome-settings-daemon:6534): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (gnome-settings-daemon:6534): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (nautilus:6632): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (polkit-gnome-authentication-agent-1:6658): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (gnome-panel:6631): Gtk-WARNING **: gtk_widget_size_allocate(): attempt to allocate widget with width -5 and height 24