Sil 3112A + Seagate Barracuda NCQ 300GB = freeze

Hello!
I bought a new Seagate Barracuda SATA harddisk with NCQ and a capacity of 300GB. I attached it to my Sil 3112A Controller but Linux freezes while booting. I am using this controller with a Seagate Barracuda 150GB without problems for a long time. Note that the new problematic harddisk is the second SATA harddisk (ata2 ?)connected to the controller. I had written the error messages to a paper and typed in again.

ata1(0): applying Seagate errate fix
ata1: dev 0 configured for UDMA/100
scsi0: sata_sil
irq10: nobody cared
[<c013645a>] __report_bad_irq +0x2a/0xa0
... a lot of messages starting with a number like [<c013645a>] ...
Disabling IRQ #10

My kernel version is 2.6.11-ck. I tried also the Silicon Image IDE driver (different to sata_sil) with a similar result.

Any idea what to do? Thanks alot! Jan