aplay garbled, but improved by mousing around (!!) ; -/

ISTM it might be some buffer-depletion event not triggering scheduling,
but mousing around (i.e., left button down on mixer title bar and moving
the window around) seems to trigger processing on some ignored queue and
activation of some buffer-filling task, so sound samples can flow.

Letting the mouse alone, buffering dies immediately and generates garbled
echoey sound, maybe repeating last available buffer as output or who knows ...

This is a new 4-penguin AMD box with 16gb ram:

[05:00 ~]$ for x in s n r v m p i o;do echo -n $x:' '; uname -$x;done
s: Linux
n: zebra
r: 2.6.37.6
v: #3 SMP Sat Apr 9 22:49:32 CDT 2011
m: x86_64
p: AMD A8-3850 APU with Radeon(tm) HD Graphics
i: AuthenticAMD
o: GNU/Linux

[ ... back later ...]

BTW, there was no sound until I added this file,
(apparently to bump default from card 0 which didn't work):

[07:19 ~]$ cat ~/.asoundrc
pcm.!default {
type hw
card 1
}

ctl.!default {
type hw
card 1
}

But otherwise this is as-is off the 13.37 DVD, 64-bit side.

Anyone else experienced these symptoms? I see there is something
new in alsa since 13.37's Apr 9 22:49:32 CDT 2011 date:

	http://www.alsa-project.org/main/index.php/Main_Page
in the project news box:
	2012-01-25      alsa 1.0.25 release | Changes v1.0.24 v1.0.25
link:	http://www.alsa-project.org/main/index.php/Changes_v1.0.24_v1.0.25

Could there be a fix in there?

TIA for any clues, in case someone knows and can save me searching ;-)

Regards,
Bengt Richter