aplay -l in process state D

[MiniMaxR]

Hi, after an update from Dapper Drake to Hardy the command "aplay -l" stopped working and the process is in state D (uninterruptible sleep). Consequently, a shutdown of the system failed, the computer keeps powered on with a black screen, no keyboard or other interaction seems to be possible. The same problems seems to be with skype v2.0.0.63-1, after sign in the skype stopped working like aplay.
My soundcard is working fine, i can use amorak and several other sound tools without problems. Just "aplay -l" and skype seems to have the problems.

Here are some further information:
$ aplay -l
**** List of PLAYBACK Hardware Devices ****

no further output, <ctrl>-c or kill -9 does not work

$ ps -aux |grep aplay
me 9835 0.0 0.0 4008 1112 pts/0 D+ 10:46 0:00 aplay -l

$ lsb_release -rd
Description: Ubuntu hardy (development branch)
Release: 8.04

$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu hardy (development branch)"

$ apt-cache policy alsa-utils
alsa-utils:
  Installed: 1.0.15-3ubuntu2
  Candidate: 1.0.15-3ubuntu2
  Version table:
 *** 1.0.15-3ubuntu2 0
        500 http://us.archive.ubuntu.com hardy/main Packages
        100 /var/lib/dpkg/status

$ uname -r
2.6.24-12-generic

$ grep "^audio" /etc/group | grep "$USER" | wc -l
1

$ lspci | grep -i audio
00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02)

$ lsmod | grep "snd"
snd_bt_sco 17738 1
snd_hwdep 10500 1 snd_bt_sco
snd_intel8x0 35356 8
snd_ac97_codec 101028 1 snd_intel8x0
ac97_bus 3072 1 snd_ac97_codec
snd_pcm_oss 42144 0
snd_mixer_oss 17920 1 snd_pcm_oss
snd_pcm 78596 5 snd_bt_sco,snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_seq_dummy 4868 0
snd_seq_oss 35584 0
snd_seq_midi 9376 0
snd_rawmidi 25760 1 snd_seq_midi
snd_seq_midi_event 8320 2 snd_seq_oss,snd_seq_midi
snd_seq 54224 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer 24836 3 snd_pcm,snd_seq
snd_seq_device 9612 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
snd 56996 27 snd_bt_sco,snd_hwdep,snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_dummy,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore 8800 1 snd
snd_page_alloc 11400 3 snd_bt_sco,snd_intel8x0,snd_pcm

$ cat /proc/asound/cards
0 [ICH5 ]: ICH4 - Intel ICH5
Intel ICH5 with AD1985 at irq 20

$ head -n 3 /proc/asound/card0/intel8x0
Intel8x0

Global control : 0xc0000002

$ head -n 3 /proc/asound/card0/codec97#0/ac97#0-0
0-0/0: Analog Devices AD1985

PCI Subsys Vendor: 0x8086

$ head -n 3 /proc/asound/card0/codec97#0/ac97#0-0+regs
0:00 = 0090
0:02 = 9f9f
0:04 = 1b1b

$ asoundconf list
Names of available sound cards:
ICH5

$ strace -e write=3,5 aplay -l
[...]
open("/dev/snd/controlC0", O_RDWR) = 3
ioctl(3, USBDEVFS_CONTROL, 0xbffb1f84) = 0
ioctl(3, UI_DEV_CREATE, 0xbffb21e0) = 0
ioctl(3, 0x80045530

no further output.

[MiniMaxR (ubuntu-maximini-world)]

No one with an idea what I can test further? Main problem is that I can't start skype. After login, skype hangs like "aplay -l".

[MiniMaxR (ubuntu-maximini-world)]

The update today solved the problem, aplay -l as well as skype are working again.