With noapic it freezes too. This doesn't occur with 2.6.20.x thought. The hardware is a Dell OptiPlex 320. I attached dmidecode/lspci/acpidmp output. If you need more information, let me know. Thanks. Guilherme M. Schroeder Network Administrator Central de Vendas Informatica LTDA Tel.: (11) 3665-2000 Ramal: 2008 http://www.centralinf.com.br Andi Kleen wrote: > guilherme writes: > >> Sorry, i put the wrong option in the last mail. >> The options that freeze my machine at boot is "HPET Timer Support". > > Either an interrupt routing problem or your HPET timer is broken. > > Does it work with noapic? > > Can you describe your hardware? dmidecode/lspci/acpidmp? > > -Andi > > >