10.10 software raid not auto assembling on boot

[nogoodnamesleft]

I have created a software raid using the gnome disk utility (palimpsest)

Ubuntu 10.10 does not auto assemble it on boot up, how do I fix this?

I didn't see a way to do it with the uility so looking at mdadm

mdadm --assemble --scan doesn't work

if i put

array dev/md0 dev/sdb1,dev/sdc1

into mdadm conf it SOMETIMES assembles (cant remember the exact syntax of that)

mdadm.conf says it is auto-created, so I'm not sure editing it will be permanent

The partitions are indeed marked as linux raid autodetect

[nogoodnamesleft]

Found problem - the device partition names change randomly

/dev/sda , /dev/sdb, /dev/sdc -> seem to randomly change between hard drives when it boots

Clearly is this broken

How do i fix?

[nogoodnamesleft]

fixed, used UUID