Partitioning with Raid impossible during GUI install

[efialtis]

I had the simple desire to create a RAID 1 sandwich. I wanted to set it all up as I was installing...
During the GUI install process with Hardy, I get to the partitioner tool, and choose MANUAL.
Then I attempt to set up the system as such...

2 Segate 160 gb SATA 1.5 drives
/dev/sda and /dev/sdb

I create a 10 gb partition for /boot (/dev/sda1)
I create a 10 gb partition for swap (/dev/sdb1)
I create 2 150 gb unformatted and unused partitions

There is, however, no way to set the RAID flag, or to assemble a RAID set.

I went back into the LIVE-CD and used GPARTED to divide up the disks and set the RAID flags.
I restarted the installer to install Ubuntu, and had the same result, no way to assemble a RAID stack.

I went back into the LIVE-CD and downloaded MDADM and created the RAID 1 Stack, and had a healthy, clean RAID partition (/dev/md0)
So I started the installer and had the same result. There is no /dev/md0 listed, no partition, no RAID flags, no nothing.

I finally had to use the ALTERNATE CD to get the TEXT installer, which uses a different Partitioning Tool. This immediately gave me the option to do RAID, so I selected it, created the RAID 1 partition out of the 2 disks, set it to / (root) and completed the install.

This shouldn't be so hard. RAID (especially RAID 0, RAID 1, and RAID 5) is becoming more popular as disks become more affordable, and data becomes more important.
When I run an UBUNTU setup, I should be greeted with a partitioning tool that gives me the option to set up a RAID. If I have an existing RAID, it should recognize it, and prepare to use it in the install.