Corsair Force GT

I bought a Force GT from Scan last week. What a job to get it to work properly. Connected to a SATA 6 Mb/s (Marvell) on my Asus P6 motherboard (AHCI, latest bios, clean Win7 etc etc) and spent the next few days looking at more BSODs than I've seen in the last 5 years. I now have it connected to a 3Gb/s (Intel) SATA on the same mobo and it's more or less fine (and quite fast). However, I want to get this thing to work like it should on a 6Gb/s SATA! Other drives are fine on the 6Gb/s port so why not the Force GT? Latest Marvell driver installed. The only thing I have not done is update the Force firmware but given the BIG problems and hassle I've had with this drive I'm half tempted to leave it on the 3Bg/s port and accept second best - but I reckon the drive should work as advertised!!! Any thoughts/solutions????:undecided