Hi

Suggestion

1) There should be option called --size in yum which can restrict the space which can be used yum. This would be beneficial to machine with low disk space.
2) If firefox 3.1beta is default then please have extensions.checkCompatibility=

false
3) Shutdown splash screen
4) ext4 (/boot) in grub

Observation:

1) Why logout is available at two different place a) under system b) In panel under name
2) Preference menu list is too long

Thanks for the great work.

Regards,
Sachin.