Kernel Panics

hey guys, got refurbished imac couple months ago, , been giving me kernel panics. doesn't happen often, 2-3 times months. running:
mac osx lion 10.7.2
2.5 ghz intel core i5
8 gb 1333 mhz ddr3

seems pretty random every time. of time i'm browsing internet on google chrome.

input appreciated. in advance!

here backtrace:

code:

interval since last panic report:  106116 sec  panics since last report:          1  anonymous uuid:                    884dede9-a466-4b97-8e47-d89789ada445    wed jan 11 11:20:37 2012  panic(cpu 0): unresponsive processor (this cpu did not acknowledge interrupts) tlb state:0  rax: 0x0000000000000000, rbx: 0x0000000000000000, rcx: 0x0000000000000003, rdx: 0x0000000000000000  rsp: 0xffffff800010bd80, rbp: 0xffffff800010bdc0, rsi: 0x0000000000000003, rdi: 0x0000000000000000  r8:  0xffffff7f81c8d626, r9:  0x0000000000000000, r10: 0x8000000000100000, r11: 0x00007f874a82e600  r12: 0xffffff80159a3380, r13: 0xffffff80159a33b0, r14: 0xffffff80008bfa60, r15: 0xffffff80008ba4c0  rfl: 0x0000000000000013, rip: 0xffffff7f81c8d642, cs:  0x0000000000000008, ss:  0x0000000000000000  backtrace (cpu 0), frame : return address  0xffffff800010bc00 : 0xffffff80002c781c   0xffffff800010bc30 : 0xffffff80002c2790   0xffffff800010bc80 : 0xffffff80002d7d3f   0xffffff800010bdc0 : 0xffffff80002c3bb0   0xffffff800010bdd0 : 0xffffff800022d87c   0xffffff800010be10 : 0xffffff800022cdba   0xffffff800010be50 : 0xffffff800022f7a2   0xffffff800010bea0 : 0xffffff800022f888   0xffffff800010bed0 : 0xffffff800023e75e   0xffffff800010bf20 : 0xffffff80002b1df2   0xffffff800010bf50 : 0xffffff80002c7859   0xffffff800010bf80 : 0xffffff80002c2790   0xffffff800010bfd0 : 0xffffff80002d7bd2   0xffffff80f20d3c90 : 0xffffff7f80f7894a   0xffffff80f20d3cf0 : 0xffffff7f80fc2dee   0xffffff80f20d3d10 : 0xffffff7f80fc3b24   0xffffff80f20d3d30 : 0xffffff7f80fc3f0f   0xffffff80f20d3da0 : 0xffffff7f80f727a7   0xffffff80f20d3e20 : 0xffffff7f80f6bc94   0xffffff80f20d3e60 : 0xffffff7f80f9c295   0xffffff80f20d3e80 : 0xffffff7f80f67cbd   0xffffff80f20d3ec0 : 0xffffff7f80f28542   0xffffff80f20d3ef0 : 0xffffff8000639966   0xffffff80f20d3f30 : 0xffffff80006386e0   0xffffff80f20d3f70 : 0xffffff8000638584   0xffffff80f20d3fb0 : 0xffffff8000820057         kernel extensions in backtrace:           com.apple.driver.airport.atheros40(501.58.1)[13be9afd-5158-3cd9-b5e9-aaf5be3062b4]@0xffffff7f80f09000->0xffffff7f81048fff              dependency: com.apple.iokit.iopcifamily(2.6.7)[6d54f06a-46b7-37fc-af22-de68dc18a1a3]@0xffffff7f80862000              dependency: com.apple.iokit.io80211family(411.1)[bf69d46e-3f5c-35c5-8167-9f872e3b20aa]@0xffffff7f80ed1000              dependency: com.apple.iokit.ionetworkingfamily(2.0)[59a00f6b-3710-3e07-9921-70c45782ff8c]@0xffffff7f80a7a000        kernel extensions in backtrace:           com.apple.driver.appleintelcpupowermanagement(167.1)[d2c47bba-59ce-3515-9d38-6244115f5304]@0xffffff7f81c8c000->0xffffff7f81cb5fff    bsd process name corresponding current thread: kernel_task    mac os version:  11c74    kernel version:  darwin kernel version 11.2.0: tue aug  9 20:54:00 pdt 2011; root:xnu-1699.24.8~1/release_x86_64  kernel uuid: 59275dfa-10c0-30b3-9e26-f7b5dfb1a432  system model name: imac12,1 (mac-942b5bf58194151b)    system uptime in nanoseconds: 30669866027889  last loaded kext @ 186915334763: com.apple.filesystems.smbfs	1.7.0 (addr 0xffffff7f807d1000, size 241664)  last unloaded kext @ 290741418923: com.apple.driver.appleusbuhci	4.4.5 (addr 0xffffff7f80acc000, size 65536)  loaded kexts:  com.logitech.control center.hid driver	3.5.1  com.apple.filesystems.smbfs	1.7.0  com.apple.driver.applehwsensor	1.9.4d0  com.apple.filesystems.autofs	3.0  com.apple.driver.applemikeyhiddriver	122  com.apple.driver.audioauuc	1.59  com.apple.driver.appleupstreamuserclient	3.5.9  com.apple.driver.applemccscontrol	1.0.26  com.apple.driver.applemikeydriver	2.1.3f7  com.apple.driver.applehda	2.1.3f7  com.apple.driver.agpm	100.12.42  com.apple.kext.atiframebuffer	7.1.4  com.apple.iokit.iouserethernet	1.0.0d1  com.apple.dont_steal_mac_os_x	7.0.0  com.apple.driver.applesmclmu	2.0.1d2  com.apple.driver.audioipcdriver	1.2.1  com.apple.driver.acpi_smc_platformplugin	4.7.5d4  com.apple.driver.airport.atheros40	501.58.1  com.apple.atiradeonx3000	7.1.4  com.apple.driver.applebacklight	170.1.9  com.apple.driver.applelpc	1.5.3  com.apple.driver.appleintelhd3000graphics	7.1.4  com.apple.iokit.scsitaskuserclient	3.0.1  com.apple.driver.appleusbcardreader	3.0.1  com.apple.driver.appleircontroller	312  com.apple.applefscompression.applefscompressiontypedataless	1.0.0d1  com.apple.applefscompression.applefscompressiontypezlib	1.0.0d1  com.apple.bootcache	33  com.apple.iokit.ioahciblockstorage	2.0.1  com.apple.driver.applefwohci	4.8.9  com.apple.driver.appleusbhub	4.5.0  com.apple.iokit.applebcm5701ethernet	3.0.8b2  com.apple.driver.appleefinvram	1.5.0  com.apple.driver.appleahciport	2.2.0  com.apple.driver.appleusbehci	4.5.5  com.apple.driver.appleacpibuttons	1.4  com.apple.driver.applertc	1.4  com.apple.driver.applehpet	1.6  com.apple.driver.applesmbios	1.7  com.apple.driver.appleacpiec	1.4  com.apple.driver.appleapic	1.5  com.apple.driver.appleintelcpupowermanagementclient	167.1.0  com.apple.nke.applicationfirewall	3.2.30  com.apple.security.quarantine	1  com.apple.driver.appleintelcpupowermanagement	167.1.0  com.apple.kext.triggers	1.0  com.apple.driver.appleavbaudio	1.0.0d11  com.apple.driver.dspfunclib	2.1.3f7  com.apple.driver.applesmbuscontroller	1.0.10d0  com.apple.iokit.iosurface	80.0  com.apple.iokit.iobluetoothserialmanager	4.0.1f4  com.apple.iokit.ioserialfamily	10.0.5  com.apple.iokit.ioavbfamily	1.0.0d22  com.apple.iokit.iofirewireip	2.2.4  com.apple.iokit.ioaudiofamily	1.8.3fc11  com.apple.kext.osvkerndsplib	1.3  com.apple.driver.applehdacontroller	2.1.3f7  com.apple.iokit.iohdafamily	2.1.3f7  com.apple.driver.applepolicycontrol	3.0.16  com.apple.driver.applesmc	3.1.1d8  com.apple.driver.ioplatformpluginfamily	4.7.5d4  com.apple.iokit.io80211family	411.1  com.apple.driver.applegraphicscontrol	3.0.16  com.apple.driver.applesmbuspci	1.0.10d0  com.apple.driver.applebacklightexpert	1.0.3  com.apple.driver.applethunderboltedmsink	1.1.3  com.apple.driver.applethunderboltedmsource	1.1.3  com.apple.kext.ati6000controller	7.1.4  com.apple.kext.atisupport	7.1.4  com.apple.iokit.iondrvsupport	2.3.2  com.apple.driver.appleintelsnbgraphicsfb	7.1.4  com.apple.iokit.iographicsfamily	2.3.2  com.apple.driver.appleusbhidkeyboard	152.3  com.apple.driver.applehidkeyboard	152.3  com.apple.driver.applethunderboltdpoutadapter	1.5.8  com.apple.driver.applethunderboltdpinadapter	1.5.8  com.apple.driver.applethunderboltdpadapterfamily	1.5.8  com.apple.driver.applethunderboltpcidownadapter	1.2.1  com.apple.driver.broadcomusbbluetoothhcicontroller	4.0.1f4  com.apple.driver.appleusbbluetoothhcicontroller	4.0.1f4  com.apple.iokit.iobluetoothfamily	4.0.1f4  com.apple.iokit.ioscsimultimediacommandsdevice	3.0.1  com.apple.iokit.iobdstoragefamily	1.6  com.apple.iokit.iodvdstoragefamily	1.7  com.apple.iokit.iocdstoragefamily	1.7  com.apple.iokit.ioscsiblockcommandsdevice	3.0.1  com.apple.iokit.iousbmassstorageclass	3.0.0  com.apple.iokit.ioahciserialatapi	2.0.1  com.apple.iokit.ioscsiarchitecturemodelfamily	3.0.1  com.apple.iokit.iousbhiddriver	4.4.5  com.apple.driver.appleusbmergenub	4.5.3  com.apple.driver.appleusbcomposite	3.9.0  com.apple.driver.xsanfilter	403  com.apple.driver.applethunderboltnhi	1.3.2  com.apple.iokit.iothunderboltfamily	1.7.4  com.apple.iokit.iofirewirefamily	4.4.5  com.apple.iokit.iousbuserclient	4.5.3  com.apple.iokit.ioethernetavbcontroller	1.0.0d5  com.apple.iokit.ionetworkingfamily	2.0  com.apple.iokit.ioahcifamily	2.0.7  com.apple.iokit.iousbfamily	4.5.5  com.apple.driver.appleefiruntime	1.5.0  com.apple.iokit.iohidfamily	1.7.1  com.apple.iokit.iosmbusfamily	1.1  com.apple.security.  model: imac12,1, bootrom im121.0047.b1d, 4 processors, intel core i5, 2.5 ghz, 8 gb, smc 1.71f22  graphics: amd radeon hd 6750m, amd radeon hd 6750m, pcie, 512 mb  memory module: bank 0/dimm0, 4 gb, ddr3, 1333 mhz, 0x80ce, 0x4d34373142353237334348302d4348392020  memory module: bank 1/dimm0, 4 gb, ddr3, 1333 mhz, 0x80ce, 0x4d34373142353237334348302d4348392020  airport: spairport_wireless_card_type_airport_extreme (0x168c, 0x9a), atheros 9380: 4.0.58.4-p2p  bluetooth: version 4.0.1f4, 2 service, 11 devices, 1 incoming serial ports  network service: wi-fi, airport, en1  serial ata device: st3500418as, 500.11 gb  serial ata device: optiarc dvd rw ad-5690h  usb device: hub_device, 0x0424  (smsc), 0x2514, 0xfa100000 / 3  usb device: usb2.0 hub controller, 0x0409  (nec corporation), 0x0058, 0xfa130000 / 6  usb device: usb receiver, 0x046d  (logitech inc.), 0xc526, 0xfa120000 / 5  usb device: brcm2046 hub, 0x0a5c  (broadcom corp.), 0x4500, 0xfa110000 / 4  usb device: bluetooth usb host controller, apple_vendor_id, 0x8215, 0xfa111000 / 7  usb device: facetime hd camera (built-in), apple_vendor_id, 0x850b, 0xfa200000 / 2  usb device: hub_device, 0x0424  (smsc), 0x2514, 0xfd100000 / 2  usb device: keyboard hub, apple_vendor_id, 0x1006, 0xfd140000 / 5  usb device: apple keyboard, apple_vendor_id, 0x0220, 0xfd142000 / 6  usb device: internal memory card reader, apple_vendor_id, 0x8403, 0xfd110000 / 4  usb device: ir receiver, apple_vendor_id, 0x8242, 0xfd120000 / 3  

 

download , re-apply "combo" 10.7.2 updater. if still having issues known airport issue addressed in 10.7.3.
wifi driver causing kernel panics. plug in ethernet cable , turn off wifi , problem go away.

 

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