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Subjectkapm-idled no longer idling CPU?

I posted this question about a month ago, but haven't seen a response
since, so I'm reposting.

I'm having a problem with all recent 2.4 systems that when any
application that uses more than very minor system resources is running,
(i.e. mozilla, netscape, xemacs, apache, Tomcat, just to name a few
common ones I've seen this behaviour with) kapm-idled no longer receives
scheduling time from what I can tell and I assume that means my CPU is
never getting idled when nothing is scheduled.

I'm pretty sure this is a legit problem and not just kapm-idled
reporting its time incorrectly since my laptop has gone from about 2-1/2
hours of battery life in early 2.4 versions to less than 1 hour of
battery life under the same conditions for recent kernels. Plus, if I
exit everything until I'm just sitting at a shell prompt, I'll see
kapm-idled start to receive time again. (Of course, the laptop isn't
much fun when it's not running anything...)

I've seen this on a number of laptops and desktop machines since about
2.4.9 or so.

--
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#!/usr/bin/perl -w
$_='while(read+STDIN,$_,2048){$a=29;$b=73;$c=142;$t=255;@t=map
{$_%16or$t^=$c^=($m=(11,10,116,100,11,122,20,100)[$_/16%8])&110;
$t^=(72,@z=(64,72,$a^=12*($_%16-2?0:$m&17)),$b^=$_%64?12:0,@z)
[$_%8]}(16..271);if((@a=unx"C*",$_)[20]&48){$h=5;$_=unxb24,join
"",@b=map{xB8,unxb8,chr($_^$a[--$h+84])}@ARGV;s/...$/1$&/;$d=
unxV,xb25,$_;$e=256|(ord$b[4])<<9|ord$b[3];$d=$d>>8^($f=$t&($d
>>12^$d>>4^$d^$d/8))<<17,$e=$e>>8^($t&($g=($q=$e>>14&7^$e)^$q*
8^$q<<6))<<9,$_=$t[$_]^(($h>>=8)+=$f+(~$g&$t))for@a[128..$#a]}
print+x"C*",@a}';s/x/pack+/g;eval

usage: qrpff 153 2 8 105 225 < /mnt/dvd/VOB_FILENAME \
| extract_mpeg2 | mpeg2dec -

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