Hi Mikael, I think you are the "guy" whose propose this patch on lkml.
I am forwarding to ACPI ml, where is the right place to send ACPI
patches. 

Hi Len,
Mikael said
"2.4.27-rc1 reintroduced the double-speed timer ACPI bug. 
Both x86-64 and i386 are affected.

The patch below fixes it on my box. It's a backport of a
patch Hans-Frieder Vogt made for 2.6.7-bk2, extended to
also handle i386.
/Mikael Pettersson"

On Fri, 2004-06-18 at 08:32, Len Brown wrote: 
> Hi Marcelo, please do a 
> 
> 	bk pull bk://linux-acpi.bkbits.net/linux-acpi-release-2.4.27
> 
> thanks,
> -Len
> 
> ps. a plain patch is also available here:
> ftp://ftp.kernel.org/pub/linux/kernel/people/lenb/acpi/patches/release/2.4.27/acpi-20040326-2.4.27.diff.gz

> <len.brown@intel.com> (04/06/18 1.1359.6.27)
>    [ACPI] fix 2.4.27-pre3 IRQ override regression
>    due to dynamically allocated mp_irqs[].
>    http://bugzilla.kernel.org/show_bug.cgi?id=2834
> 

Hope help something, sorry for my poor English.
-- 
Sérgio M. B.