Hi to All! Sorry for my bad English... On my notebook HP ProBook 4510s <NX668EA> (Bios Compaq F17 (latest)) the problem of times in some weeks is observed at loading FreeBSD 8.1. Code: Fatal trap 12: page fault while in kernel mode cpuid=0; apic id=00 fault virtual adress=0x14 fault code=supervisos read, page not present instruction pointer=0x20:0xc0966916 stack pointer=0x28:0xea0b7c50 frame pointer=0x28:0xea0b7c50 code segment=base 0x0, limit 0xfffff type 0x1b =DPL 0, pres 1, def 32 1, gran 1 processor eflags=interrupt enabled, resume, IOPL=0 current process=15 (acpi_thermal) trap number=12 ppanic:smp_tlp_shutdown: interrapts disabled cpuid=0 Uptime: 25s Cannot dump. Device not defined or unavailable Automatic reboot in 15 seconds - press a key on the console to abort or switch off the system now Loading was spent with options by default (ACPI ON) as at ACPI OFF, the system isn't loaded in general on this notebook (into networks there were similar cases on this model laptop). Drops out too kernel panic at loading if it is necessary - then I will write log. Any thoughts to solve this problem?