UTM 9.105 & Citrix XEN 6.2 - Freezes on "Formatting Storage Partition"

Hi,

I download yesterday the .ISO file for UTM 9.105 but it freezes for a long time in this portion of installation.
We have a Dell PE T420 with 3x 600GB SAS 15k working on RAID5.

Steps of Freeze
##########
- on 50%, for more than 20min.
- on 62%, for more than 10min.
- on 75% saying 'creating journal', for more than 20min. :mad:
- on 87% saying 'creating journal', for more than 20min. :mad:

I like since Astaro provide me more hour in a customer ;); my customer hate wait a long time and expend technical hours :mad:.