Jaunty amd64 kernel reboots when loading device drivers

[the-fallen]

Fresh installed Jaunty amd64 (2.6.28-9) reboots shortly after boot. The i386 version runs perfectly.

The reboot happens quite after the message "loading device drivers" but not exactly at the same time each time I try so it is not possible to say what module is causing it.
I also tried the 2.6.29-rc8 from the kernel-ppa with the same effect (installed using a chroot environment).

System Logs are empty if I try to read them with a live-cd so the log daemon seems not to be running when the reboot appears.
Would like to add more detailled information but the reboot appears fast to it is hard to read the last messages.
Is there a way to boot step by step by confirming each module to load?

Some information:

Used Version: 9.04 beta 6 and every daily build after the beta release

Used Hardwre:
Samsung Aura R560 Laptop
Intel P8600 CPU
Intel 82801 Chipset (ICH9M-E/M)
DDR3 Memory
Intel IWL 5300 Wireless
BroadCom Bluetooth
Marvel Yukon 88E8055 Ethernet
Realtek audio
Nvidia GPU

[the-fallen (thefallen)]

Also affects Fedora 10 64Bit but Fedora reboots nearly at te end of the boot process. Maybe Fedora is loading modules / programs in a different order.
I would like to find the exact reason. Any suggestions?