I too am experiencing this on an Acer Ferrari 4005. It occurs every few seconds, and ends up filling up dmesg completely. I have attached an output of "sudo lspci -vv". All of this ws captured without the broadcom (bcm43xx) module loaded.
If there is any other information I can provide, please let me know. ---------- $ cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 36 model name : AMD Turion(tm) 64 Mobile Technology ML-37 stepping : 2 cpu MHz : 800.000 cache size : 1024 KB fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt lm 3dnowext 3dnow up pni lahf_lm bogomips : 1601.71 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp tm stc $ cat /proc/interrupts CPU0 0: 3121568 local-APIC-edge timer 1: 3078 IO-APIC-edge i8042 7: 2 IO-APIC-edge parport0 8: 0 IO-APIC-edge rtc 9: 0 IO-APIC-edge acpi 12: 380092 IO-APIC-edge i8042 14: 42573 IO-APIC-edge ide0 15: 111649 IO-APIC-edge ide1 169: 797341 IO-APIC-level eth0, fglrx 177: 1 IO-APIC-level yenta, tifm_7xx1 209: 1796 IO-APIC-level ATI IXP Modem, ATI IXP 225: 1 IO-APIC-level ohci_hcd:usb1, ohci_hcd:usb2, ehci_hcd:usb3 233: 978784082 IO-APIC-level ohci1394 NMI: 10265 LOC: 3121400 ERR: 7211 MIS: 0 ** Attachment added: "Output of "sudo lspci -vv"" http://librarian.launchpad.net/4930913/lspci_vv_output.txt -- APIC error on CPU0: 40(40) https://launchpad.net/bugs/66900 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs