This is the 2.6.19.2 stable release
Linux 2.6.20-rc5
Linux 2.6.20-rc6
Linux 2.6.20-rc7 Let's try to make sure that the fixes didn't introduce any new problems..
Linux 2.6.20 .. because you wouldn't want anything less!
This is the 2.6.19.3 stable release
Linux 2.6.16.40
Linux 2.6.16.41-rc1