Problem: ACPI regression, fixed in 3.4 kernel
Solution: added processor.nocst=1 and only that to boot line
Link: http://pkgs.fedoraproject.org/gitweb/?p
9eb39f9695
Swapped my perfectly working netbook for a regular laptop, a 2007 Fujitsu Siemens AMILO Li 1718 made for Windows Vista
The problems I have had with it are the following:
No BIOS options to speak of
Broken BIOS (only works 100% with MS Windows/Mac OS X)
ATI IXP SB400 Serial ATA Controller (non-AHCI in IDE mode)
Strangely enough OpenIndiana and the *BSD livecds had no trouble with my hardware when the current crop of linux distros hung or half ran with ACPI turned off - yes, even the mighty Statler failed
EDIT: Backports version works, quite possibly Waldorf
Yesterday I tried the new ArchBang booting with libata.force=noncq pnpbios=off irqpoll and got a lag free desktop without those damn lost interrupt ATA DRDY DRQ messages. Guess they reinstated the IRQ fixups in the latest kernel 
[ 2.399835] libata version 3.00 loaded.
[ 2.400669] pata_atiixp 0000:00:14.1: setting latency timer to 64
[ 2.402471] scsi0 : pata_atiixp
[ 2.405685] scsi1 : pata_atiixp
[ 2.406347] ata1: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0x8460 irq 14
[ 2.406351] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0x8468 irq 15
[ 2.520381] pata_acpi 0000:00:12.0: enabling device (0005 -> 0007)
[ 2.567339] ata1.00: FORCE: horkage modified (noncq)
[ 2.567347] ata1.00: ATAPI: Optiarc DVD RW AD-7540A, 1.42, max UDMA/33
[ 2.580579] ata1.00: configured for UDMA/33
[ 2.595021] sata_sil 0000:00:12.0: version 2.4
[ 2.598810] scsi2 : sata_sil
[ 2.602194] scsi3 : sata_sil
[ 2.602448] ata3: SATA max UDMA/100 mmio m512@0xc0507000 tf 0xc0507080 irq 22
[ 2.602454] ata4: SATA max UDMA/100 mmio m512@0xc0507000 tf 0xc05070c0 irq 22
[ 2.920053] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 2.926978] ata3.00: FORCE: horkage modified (noncq)
[ 2.981654] ata3.00: ATA-7: WDC WD1600BEVS-07RST0, 04.01G04, max UDMA/133
[ 2.981658] ata3.00: 312581808 sectors, multi 16: LBA48 NCQ (not used)
[ 2.994071] ata3.00: configured for UDMA/100
[ 3.313366] ata4: SATA link down (SStatus 0 SControl 300)
So, my question.. is there any flag to force the SATA driver to IDE compatibility mode directly and not probe for any of the fancy tech that's not there?