Skype 4 не работает с Ubuntu 13.04

Кто-нибудь может мне помочь? Когда я запускаю skype с Ubuntu 13.04, я получаю эту ошибку:

skype 
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dsnoop.c:612:(snd_pcm_dsnoop_open) unable to open slave