panic

[Mauro Gaggero]

I have just installed FreeBSD 5.1.
When the installation finished I rebooted the computer but I had the following error:

===============================================================
.....
using $PIR table, 9 entries at 0xc00f77f0
pcib0: <Host to PCI bridge> at pcibus0 on motherboard
pci0: <PCI bus> on pcib0
agp0: <Ali Generic host to PCI bridge> mem 0xd8000000-0xdbffffff at device 0.0 on pci0
panic: contigmalloc1: size must not be 0
Uptime: 1s
Automatic reboot in 15 seconds .....
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with the ACPI disabled. With ACPI enabled I got another error.
How can I do? Thanks