> Well, making it work without pci=nomsi is the whole point here.  I dunno
> why this simple thing doesn't work.  Can you post the result of 'lspci
> -nn' so that we can see the numeric ID?
>   
I would really like to know the answer to that, but i'm hundred of miles 
away. Attached to this email is the output of  lspci -nn .

Maybe you have the wrong id of the pci bridge:



00:02.0 PCI bridge [0604]: ATI Technologies Inc RS480 PCI-X Root Port 
[1002:5a34]

+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi); /* RS480 PCI bridge */