Kernel panic installing FC4

[Beppe]

Hi All,

I'm trying to install new FC4 but system hangs during first step of 
installation.
The only message I can see is a long list of unuseful strings beginning 
with:

[<c01002b8>] init+0x18/0xf0
[<c01012b1>] kernel_thread_helper+0x5/0x14
code: c8 ....
<0> kernel panic - not syncing: Attempt to kill init!
...

Now I must hard reset the system.

No trouble with FC3 installation!
The system runs with an Intel 915GEV m/b, SATA disk and PCIExpress.

Any idea?

Thanks

Beppe