[Bug 569645] [NEW] 10.04RC system boot random assignment of sda, sdb

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Ubuntu 10.04 RC
System has two hard drives.  15 partitions on SATA 1TB drive.  12 partitions on ATA/IDE 120GB drive.
Each boot U1004RC assigns random drive letters.  1TB to sda or maybe 1TB to sdb.
My large Data partition on sda5 shows as sdb5 often, about 30% of the time on boot.
So I changed /etc/fstab to use UUID for all partitions.  Still this happens.  
I play with lots of Linux OS (27 partitions, 3 for Data).  I have not seen this anywhere but 10.04.
The truly maddening part is root always shows as /dev/sda11, but if Data shows as sdb5 then changes made to root are stored in /dev/sdb11 not /dev/sda11 !!!!!  The first step each boot is a terminal window and 'df' to see if the drives are backwards again.  And I changed the desktop background as an obvious error flag.
Expected: each boot the drives always have the same device ID
Seen: random assignment of sda, sdb

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

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10.04RC system boot random assignment of sda, sdb
https://bugs.launchpad.net/bugs/569645
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