FC6 doesn't boot on VIA C3

[Hans-Jürgen Koch]

I'm trying to boot FC6 on an IPC with a VIA C3 (Samuel 2). The kernel comes up 
without error messages. As soon as a binary from the root file system should 
be started, the boot process stops without further messages. Keyboard and 
screen are still working!
Not that the root file system was already successfully mounted by the kernel, 
and no errors or warnings where displayed on the console.

Are there any known limitations of FC6 regarding VIA processors? Any other 
hints?

Thanks,
Hans