My MacBook Pro freezes and requires rebooting by holding the start button. The error report tells me nothing ... Please help me!

Interval Since Last Panic Report:  100448 sec
Panics Since Last Report:          1
Anonymous UUID:                   B1970402-99ED-4874-AE1C-17059BA38872
Fri Apr 29 09:37:18 2011
panic(cpu 2 caller 0xffffff80002d11f4): Kernel trap at0xffffff7f80bf91f6, type 13=general protection, registers:
CR0: 0x000000008001003b, CR2: 0x000000000bc9f000, CR3:0x0000000000100000, CR4: 0x0000000000040660
RAX: 0xffffff7f80bf9386, RBX: 0xffffff800f2f22c0, RCX:0xffffff805ac6de00, RDX: 0xffffff8059e6bd10
RSP: 0xffffff8059e6bcf0, RBP: 0xffffff8059e6bda0, RSI:0xffffff800eafbd00, RDI: 0xffdb31e7894c2404
R8: 0x0000000000000042, R9: 0x0000000000000000, R10: 0x000000000000009e, R11: 0xffffff80004f4e7e
R12: 0xffffff7f80bf7f3a, R13: 0xffffff7f80bf933e, R14:0xffffff805ac6de00, R15: 0xffffff8059e6be8c
RFL: 0x0000000000010246, RIP: 0xffffff7f80bf91f6, CS:  0x0000000000000008, SS:  0x0000000000000010
Error code: 0x0000000000000000
Backtrace (CPU 2), Frame : Return Address
0xffffff8059e6b990 : 0xffffff8000204d15
0xffffff8059e6ba90 : 0xffffff80002d11f4
0xffffff8059e6bbe0 : 0xffffff80002e3f1a
0xffffff8059e6bbf0 : 0xffffff7f80bf91f6
0xffffff8059e6bda0 : 0xffffff7f80bf950c
0xffffff8059e6bdc0 : 0xffffff7f808a372d
0xffffff8059e6be00 : 0xffffff800053c6cd
0xffffff8059e6be50 : 0xffffff7f808a2b82
0xffffff8059e6be70 : 0xffffff7f808a3083
0xffffff8059e6beb0 : 0xffffff7f808a3260
0xffffff8059e6bed0 : 0xffffff800053bdd4
0xffffff8059e6bf10 : 0xffffff800053b2b7
0xffffff8059e6bf60 : 0xffffff800053af5d
0xffffff8059e6bfa0 : 0xffffff80002c84f7
      KernelExtensions in backtrace (with dependencies):
        com.apple.driver.AppleUSBEthernetHost(2.1.1)@0xffffff7f80bf7000->0xffffff7f80bf cfff
           dependency: com.apple.iokit.IONetworkingFamily(1.10)@0xffffff7f80894000
           dependency: com.apple.iokit.IOUSBFamily(4.2.0)@0xffffff7f80db6000
        com.apple.iokit.IONetworkingFamily(1.10)@0xffffff7f80894000->0xffffff7f808adfff
BSD process name corresponding to current thread:kernel_task
Mac OS version:
10J3250
Kernel version:
Darwin Kernel Version 10.7.3: Sun Mar  6 13:37:56 PST 2011;root:xnu-1504.14.2~1/RELEASE_X86_64
System model name: MacBookPro8,1 (Mac-94245B3640C91C81)
System uptime in nanoseconds: 13023511508138
unloaded kexts:
com.apple.driver.AppleUSBUHCI          4.2.0 (addr 0xffffff7f8109d000, size 0x65536) - lastunloaded 100579451710
loaded kexts:
com.apple.driver.AppleUSBEthernetHost                 2.1.1 - last loaded 11869908071980
com.apple.driver.AppleHWSensor        1.9.3d0
com.apple.driver.IOBluetoothBNEPDriver                2.4.4f2
com.apple.filesystems.autofs                 2.1.0
com.apple.driver.AGPM    100.12.31
com.apple.driver.AppleMikeyHIDDriver                   1.2.0
com.apple.driver.AppleHDA                  2.0.2f10
com.apple.driver.AppleUpstreamUserClient            3.5.4
com.apple.driver.AppleMCCSControl   1.0.17
com.apple.driver.AppleMikeyDriver    2.0.2f10
com.apple.driver.AudioAUUC                1.54
com.apple.driver.AppleIntelHDGraphics                   6.3.2
com.apple.driver.SMCMotionSensor    3.0.1d2
com.apple.Dont_Steal_Mac_OS_X           7.0.0
com.apple.driver.AudioIPCDriver         1.1.6
com.apple.driver.ACPI_SMC_PlatformPlugin             4.6.0d12
com.apple.driver.AppleLPC                   1.5.1
com.apple.driver.AppleBacklight          170.0.46
com.apple.kext.AppleSMCLMU             1.5.2d6
com.apple.driver.AppleIntelSNBGraphicsFB             6.3.2
com.apple.driver.AppleUSBTCButtons 201.2
com.apple.driver.AppleUSBTCKeyboard                   201.2
com.apple.driver.AppleIRController     303.8
com.apple.iokit.SCSITaskUserClient     2.6.6
com.apple.BootCache       31
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib  1.0.0d1
com.apple.iokit.IOAHCIBlockStorage    1.6.3
com.apple.driver.AirPort.Brcm4331    429.10.2
com.apple.driver.AppleFWOHCI           4.7.3
com.apple.driver.AppleUSBHub           4.2.0
com.apple.iokit.AppleBCM5701Ethernet                  3.0.2b8
com.apple.driver.AppleSDXC                1.0.2
com.apple.driver.AppleSmartBatteryManager         160.0.0
com.apple.driver.AppleEFINVRAM       1.4.0
com.apple.driver.AppleAHCIPort          2.1.6
com.apple.driver.AppleUSBEHCI          4.2.0
com.apple.driver.AppleACPIButtons    1.3.6
com.apple.driver.AppleRTC                   1.3.1
com.apple.driver.AppleHPET                1.5
com.apple.driver.AppleSMBIOS            1.7
com.apple.driver.AppleACPIEC             1.3.6
com.apple.driver.AppleAPIC                 1.4
com.apple.driver.AppleIntelCPUPowerManagementClient          142.4.1
com.apple.security.sandbox                  1
com.apple.security.quarantine             0
com.apple.nke.applicationfirewall        2.1.11
com.apple.driver.AppleIntelCPUPowerManagement                    142.4.1
com.apple.driver.AppleThunderboltDPOutAdapter                      1.1.1
com.apple.driver.AppleThunderboltDPInAdapter   1.1.1
com.apple.driver.AppleThunderboltDPAdapterFamily                 1.1.1
com.apple.driver.AppleThunderboltPCIDownAdapter                 1.0.5
com.apple.driver.DspFuncLib               2.0.2f10
com.apple.driver.AppleProfileReadCounterAction   17
com.apple.driver.AppleProfileTimestampAction      10
com.apple.driver.AppleProfileThreadInfoAction      14
com.apple.driver.AppleProfileRegisterStateAction   10
com.apple.driver.AppleProfileKEventAction             10
com.apple.driver.AppleProfileCallstackAction          20
com.apple.driver.AppleSMBusController                  1.0.10d0
com.apple.iokit.IOFireWireIP                2.0.3
com.apple.driver.AppleThunderboltNHI                   1.1.9
com.apple.iokit.IOThunderboltFamily  1.2.2
com.apple.iokit.IOSurface                      74.2
com.apple.iokit.IOBluetoothSerialManager               2.4.4f2
com.apple.iokit.IOSerialFamily              10.0.3
com.apple.iokit.IOAudioFamily              1.8.3fc2
com.apple.kext.OSvKernDSPLib           1.3
com.apple.driver.AppleHDAController 2.0.2f10
com.apple.iokit.IOHDAFamily                2.0.2f10
com.apple.iokit.AppleProfileFamily      41
com.apple.driver.IOPlatformPluginFamily                4.6.0d12
com.apple.driver.AppleSMBusPCI        1.0.10d0
com.apple.driver.AppleBacklightExpert                    1.0.1
com.apple.iokit.IONDRVSupport           2.2
com.apple.driver.AppleSMC                  3.1.0d5
com.apple.iokit.IOGraphicsFamily         2.2
com.apple.driver.BroadcomUSBBluetoothHCIController              2.4.4f2
com.apple.driver.AppleUSBBluetoothHCIController                      2.4.4f2
com.apple.iokit.IOBluetoothFamily       2.4.4f2
com.apple.driver.AppleUSBMultitouch                      207.5
com.apple.iokit.IOUSBHIDDriver          4.2.0
com.apple.driver.AppleUSBMergeNub                      4.2.0
com.apple.driver.AppleUSBComposite 3.9.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice                    2.6.6
com.apple.iokit.IOBDStorageFamily      1.6
com.apple.iokit.IODVDStorageFamily   1.6
com.apple.iokit.IOCDStorageFamily      1.6.1
com.apple.driver.XsanFilter                  402.1
com.apple.iokit.IOAHCISerialATAPI      1.2.5
com.apple.iokit.IOSCSIArchitectureModelFamily      2.6.6
com.apple.iokit.IO80211Family            320.1
com.apple.iokit.IOFireWireFamily         4.2.6
com.apple.iokit.IONetworkingFamily    1.10
com.apple.iokit.IOUSBUserClient          4.2.0
com.apple.iokit.IOAHCIFamily               2.0.5
com.apple.iokit.IOUSBFamily                 4.2.0
com.apple.driver.AppleEFIRuntime     1.4.0
com.apple.iokit.IOHIDFamily                 1.6.6
com.apple.iokit.IOSMBusFamily            1.1
com.apple.kext.AppleMatch                  1.0.0d1
com.apple.security.TMSafetyNet          6
com.apple.driver.DiskImages                289
com.apple.iokit.IOStorageFamily           1.6.3
com.apple.driver.AppleACPIPlatform  1.3.6
com.apple.iokit.IOPCIFamily                  2.6.2
com.apple.iokit.IOACPIFamily               1.3.0
Model: MacBookPro8,1, BootROM MBP81.0047.B04, 2 processors,Intel Core i5, 2.3 GHz, 4 GB, SMC 1.68f96
Graphics: Intel HD Graphics 3000, Intel HD Graphics 3000,Built-In, 384 MB
Memory Module: global_name
AirPort: spairport_wireless_card_type_airport_extreme(0x14E4, 0xD6), Broadcom BCM43xx 1.0 5.100.198.10.2)
Bluetooth: Version 2.4.4f2, 2 service, 19 devices, 1incoming serial ports
Serial ATA Device: Hitachi HTS545032B9A302, 298,09 GB
Serial ATA Device: MATSHITADVD-R   UJ-898
USB Device: FaceTime HD Camera (Built-in), 0x05ac  (Apple Inc.), 0x8509, 0xfa200000 / 3
USB Device: Hub, 0x0424 (SMSC), 0x2513, 0xfa100000 / 2
USB Device: BRCM2070 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0xfa110000 / 5
USB Device: Bluetooth USB Host Controller, 0x05ac  (Apple Inc.), 0x821a, 0xfa113000 / 8
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac  (Apple Inc.), 0x0246, 0xfa120000 / 4
USB Device: Hub, 0x0424 (SMSC), 0x2513, 0xfd100000 / 2
USB Device: USB Receiver, 0x046d  (Logitech Inc.), 0xc52b, 0xfd120000 / 4
USB Device: IR Receiver, 0x05ac  (Apple Inc.), 0x8242, 0xfd110000 / 3

How often do they happen? What exactly are you doing when they happen? Do you have any external devices plugged in? 
17" 2.2GHz i7 Quad-Core MacBook Pro  8G RAM  750G + 120G OCZ Vertex 3 SSD Boot HD 

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    2014-09-03 8:25:48.000 PM kernel[0]: nspace-handler-unblock: did not find token 7629
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    2014-09-03 8:25:48.000 PM kernel[0]: sav: onaccess_send: NULL target or context; request:0 kctl_entry:0xffffff80234d5000
    2014-09-03 8:25:48.000 PM kernel[0]: sav: onaccess_send: not SAV_KCTL_REQ_COMPLETE, return ENOMEM
    2014-09-03 8:25:48.000 PM kernel[0]: sav: onaccess_send: NULL target or context; request:0 kctl_entry:0xffffff80234d5000
    2014-09-03 8:25:48.000 PM kernel[0]: sav: onaccess_send: not SAV_KCTL_REQ_COMPLETE, return ENOMEM
    2014-09-03 8:25:48.000 PM kernel[0]: sav: onaccess_send: NULL target or context; request:0 kctl_entry:0xffffff80234d5000
    2014-09-03 8:25:48.000 PM kernel[0]: sav: onaccess_send: not SAV_KCTL_REQ_COMPLETE, return ENOMEM
    2014-09-03 8:25:48.000 PM kernel[0]: sav: onaccess_send: NULL target or context; request:0 kctl_entry:0xffffff80234d5000
    2014-09-03 8:25:48.000 PM kernel[0]: sav: onaccess_send: not SAV_KCTL_REQ_COMPLETE, return ENOMEM
    2014-09-03 8:25:48.000 PM kernel[0]: sav: onaccess_send: NULL target or context; request:3 kctl_entry:0xffffff80234d5000
    2014-09-03 8:25:48.000 PM kernel[0]: sav: onaccess_send: SAV_KCTL_REQ_COMPLETE, intercheck_done()
    2014-09-03 8:25:50.584 PM com.apple.launchd.peruser.501[198]: Background: [2070] disappeared out from under us (UID: 501 EUID: 501)
    2014-09-03 8:25:52.554 PM sandboxd[139]: ([2068]) assistantd(2068) deny file-read-data /Library/Preferences/com.apple.security-common.plist
    2014-09-03 8:27:22.580 PM Console[2087]: setPresentationOptions called with NSApplicationPresentationFullScreen when there is no visible fullscreen window; this call will be ignored.
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