Hmm, that's a bit of a pity... I thought the Adaptec 5405 would be the ideal card to buy: SAS support (= 15k.6 support), fast (1.2 ghz Dualcore), relatively cheap and good software.
But boot time is also quite important to me, the ARC1231 and RR3520 are the better options in that perspective, with about the same performance.

Anyone knows how long the ARC1231 would take to boot in RAID0?