ALSA problem`

[Michael Havens]

You know..... I start my computer and sound works for a bit. 
then  it errore out in my open terminal:
1- ALSA: underrun, at least 0ms.
2- couldn't find a suitible web browser!
3- Set BROWSER environment variable to your desired browser.
4- ALSA lib pcm_dmix.c:819:(snd_pcm_dmix_open) unable to open slave.
5- ALSA snd_pcm_open error: Device or resource busy

to get it to work I have to kill konqueror....

what to do what to do?