I've attached .xsession-errors . Looking at it, this may be it?

ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.ICH-MODEM.pcm.front.0:CARD=1'
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:3982:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM front:1
** (gnome-settings-daemon:5821): DEBUG: Could not find valid 'Priority' in /usr/lib/gnome-settings-daemon-2.0/keybindings.gnome-settings-plugin
ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.ICH-MODEM.pcm.surround40.0:CARD=1'
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:3982:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM surround40:1
ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.ICH-MODEM.pcm.surround51.0:CARD=1'
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:3982:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM surround41:1
ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.ICH-MODEM.pcm.surround51.0:CARD=1'
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:3982:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM surround50:1
ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.ICH-MODEM.pcm.surround51.0:CARD=1'
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:3982:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM surround51:1
ALSA lib conf.c:3949:(snd_config_expand) Unknown parameters 1
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM surround71:1
** (gnome-settings-daemon:5821): DEBUG: GnomeSettingsModule 0x807f400 initialising
** (gnome-settings-daemon:5821): DEBUG: Loading /usr/lib/gnome-settings-daemon-2.0/libkeybindings.so
ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.ICH-MODEM.pcm.front.0:CARD=1'
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:3982:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM front:1
ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.ICH-MODEM.pcm.surround40.0:CARD=1'
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:3982:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM surround40:1
ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.ICH-MODEM.pcm.surround51.0:CARD=1'
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:3982:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM surround41:1
ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.ICH-MODEM.pcm.surround51.0:CARD=1'
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:3982:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM surround50:1
ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.ICH-MODEM.pcm.surround51.0:CARD=1'
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:3982:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM surround51:1
ALSA lib conf.c:3949:(snd_config_expand) Unknown parameters 1
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM surround71:1
ALSA lib control.c:909:(snd_ctl_open_noupdate) Invalid CTL front:0