I've got the same errors on my Asus L5800C laptop. Even worse: i've had no problems running breezy and dapper but I am since recently experiencing random hangups in Edgy. This results in the keyboards (1 onboard, 1 ps/2 through usb) not responding (mouse and touchpad still do). Then either no program in gnome starts anymore or when I can make it reboot it hangs on errors from the bcm43xx Broadcom wifi driver. I have to do a hard reset and then at boot when I have to enter my boot password set in the bios only the laptop keyboard works, the external one does not until linux boots. Just did a completely clean install of Edgy yesterday and this still seems to occur. Sometimes nothing happens for two days straight and sometimes it hangs three times in one day. I hope these data will help: $ uname -a Linux toMeloos 2.6.17-10-generic #2 SMP Tue Dec 5 22:28:26 UTC 2006 i686 GNU/Linux $ uptime 10:29:13 up 9:11, 2 users, load average: 0.14, 0.10, 0.09 $ dmesg |grep "APIC error on CPU0:" | wc --lines 56 => please note that during this uptime it was idle for all but about one hour. $ lspci 00:00.0 Host bridge: Silicon Integrated Systems [SiS] 645xx (rev 03) 00:01.0 PCI bridge: Silicon Integrated Systems [SiS] Virtual PCI-to-PCI bridge (AGP) 00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS963 [MuTIOL Media IO] (rev 14) 00:02.1 SMBus: Silicon Integrated Systems [SiS] SiS961/2 SMBus Controller 00:02.3 FireWire (IEEE 1394): Silicon Integrated Systems [SiS] FireWire Controller 00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] 00:02.6 Modem: Silicon Integrated Systems [SiS] AC'97 Modem Controller (rev a0) 00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] AC'97 Sound Controller (rev a0) 00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f) 00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f) 00:03.2 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f) 00:03.3 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller 00:0a.0 CardBus bridge: ENE Technology Inc CB-720/2/4 Cardbus Controller (rev 01) 00:0a.1 CardBus bridge: ENE Technology Inc CB-720/2/4 Cardbus Controller (rev 01) 00:0a.2 FLASH memory: ENE Technology Inc CB710 Memory Card Reader Controller 00:0c.0 Network controller: Broadcom Corporation BCM4303 802.11b Wireless LAN Controller (rev 02) 00:0d.0 Ethernet controller: 3Com Corporation 3c940 10/100/1000Base-T [Marvell] (rev 12) 01:00.0 VGA compatible controller: ATI Technologies Inc Radeon R250 Lf [FireGL 9000] (rev 01) 06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) $ lsmod Module Size Used by binfmt_misc 13448 1 rfcomm 42260 2 l2cap 27136 5 rfcomm nfs 250316 1 lockd 67976 2 nfs sunrpc 165948 3 nfs,lockd ipv6 272288 12 radeon 118816 2 drm 74644 3 radeon speedstep_lib 5764 0 cpufreq_userspace 5408 0 cpufreq_stats 7744 0 freq_table 6048 1 cpufreq_stats cpufreq_powersave 2944 0 cpufreq_ondemand 8876 0 cpufreq_conservative 8712 0 video 17540 0 tc1100_wmi 8324 0 sbs 16804 0 sony_acpi 6412 0 pcc_acpi 14080 0 i2c_ec 6272 1 sbs hotkey 11556 0 dev_acpi 12292 0 button 7952 0 battery 11652 0 container 5632 0 ac 6788 0 asus_acpi 17688 0 af_packet 24584 2 fuse 43912 0 sbp2 24584 0 scsi_mod 144648 1 sbp2 lp 12964 0 8139cp 24832 0 8139too 29056 0 mii 6912 2 8139cp,8139too joydev 11200 0 tsdev 9152 0 hci_usb 18068 1 bluetooth 53476 7 rfcomm,l2cap,hci_usb usbhid 45152 0 snd_intel8x0 34844 1 snd_ac97_codec 97696 1 snd_intel8x0 snd_ac97_bus 3456 1 snd_ac97_codec usblp 15488 0 bcm43xx 127252 0 snd_pcm_oss 47360 0 snd_mixer_oss 19584 1 snd_pcm_oss pcmcia 40380 0 irtty_sir 10112 0 sir_dev 18308 1 irtty_sir irda 214332 2 irtty_sir,sir_dev evdev 11392 3 crc_ccitt 3200 1 irda ieee80211softmac 33792 1 bcm43xx ieee80211 35272 2 bcm43xx,ieee80211softmac ieee80211_crypt 7552 1 ieee80211 serio_raw 8452 0 snd_pcm 84612 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss snd_timer 25348 1 snd_pcm psmouse 41352 0 skge 40336 0 yenta_socket 28812 3 rsrc_nonstatic 15360 1 yenta_socket shpchp 42144 0 pci_hotplug 32828 1 shpchp sis_agp 9860 1 agpgart 34888 2 drm,sis_agp pcspkr 4352 0 pcmcia_core 43924 3 pcmcia,yenta_socket,rsrc_nonstatic floppy 63044 0 parport_pc 37796 1 parport 39496 2 lp,parport_pc i2c_sis96x 6660 0 snd 58372 8 snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer soundcore 11232 1 snd i2c_core 23424 2 i2c_ec,i2c_sis96x snd_page_alloc 11400 2 snd_intel8x0,snd_pcm ext3 142728 1 jbd 62228 1 ext3 ohci1394 37040 0 ieee1394 306104 2 sbp2,ohci1394 ehci_hcd 34696 0 ohci_hcd 22532 0 usbcore 134912 6 hci_usb,usbhid,usblp,ehci_hcd,ohci_hcd ide_generic 2432 0 ide_disk 18560 3 ide_cd 33696 0 cdrom 38944 1 ide_cd sis5513 15368 1 generic 6276 0 thermal 15624 0 processor 31560 1 thermal fan 6020 0 fbcon 41504 0 tileblit 3840 1 fbcon font 9344 1 fbcon bitblit 7168 1 fbcon softcursor 3328 1 bitblit vesafb 9244 0 capability 5896 0 commoncap 8704 1 capability $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 2.80GHz stepping : 7 cpu MHz : 2800.633 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe up cid xtpr bogomips : 5606.14 $ cat /proc/interrupts CPU0 0: 8459330 IO-APIC-edge timer 1: 12 IO-APIC-edge i8042 7: 0 IO-APIC-edge parport0 8: 3 IO-APIC-edge rtc 9: 16 IO-APIC-level acpi 12: 119 IO-APIC-edge i8042 14: 295880 IO-APIC-edge ide0 15: 84851 IO-APIC-edge ide1 169: 2029963 IO-APIC-level yenta, radeon@pci:0000:01:00.0 177: 248454 IO-APIC-level ohci1394, yenta, eth2, bcm43xx 185: 274791 IO-APIC-level skge, SiS SI7012 193: 1 IO-APIC-level ohci_hcd:usb1 201: 0 IO-APIC-level ohci_hcd:usb2 209: 0 IO-APIC-level ohci_hcd:usb3 217: 29690 IO-APIC-level ehci_hcd:usb4 NMI: 0 LOC: 8459172 ERR: 109 MIS: 0 p.s. my laptop is 3,5 years old and Asus has not released new bios versions for years. Given the fact that linux always worked just fine would probably mean that this is an operating system, not a bios problem.