Kernel Panic

Since I installed MacOSX 10.8.5 Lion Mountain, the cumputer restarts frequently on its own. This is the message:

Interval Since Last Panic Report: 65605 sec

Panics Since Last Report: 2

Anonymous UUID: 4EFC2028-FF71-634D-E58A-02239C01D72D

Sat Mar 29 16:17:05 2014

panic(cpu 2 caller 0xffffff7f95abaf1a): "GPU Panic: [<None>] 5 3 7f 0 0 0 0 3 : NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xd2000000 0xffffff810490d000 0x0a5480a2, D0, P3/4\n"@/SourceCache/AppleGraphicsControl/AppleGraphicsControl-3.4.5/src/AppleM uxControl/kext/GPUPanic.cpp:127

Backtrace (CPU 2), Frame : Return Address

0xffffff8103bd3710 : 0xffffff801341d636

0xffffff8103bd3780 : 0xffffff7f95abaf1a

0xffffff8103bd3850 : 0xffffff7f93bad88c

0xffffff8103bd3910 : 0xffffff7f93c8085a

0xffffff8103bd3950 : 0xffffff7f93c808b8

0xffffff8103bd39c0 : 0xffffff7f93f46280

0xffffff8103bd3af0 : 0xffffff7f93ca9345

0xffffff8103bd3b10 : 0xffffff7f93bb465f

0xffffff8103bd3bc0 : 0xffffff7f93bb20f6

0xffffff8103bd3dc0 : 0xffffff7f93bb3161

0xffffff8103bd3ea0 : 0xffffff7f93b4ee2a

0xffffff8103bd3ef0 : 0xffffff7f95a7c838

0xffffff8103bd3f40 : 0xffffff7f95a7b783

0xffffff8103bd3f60 : 0xffffff801343e26e

0xffffff8103bd3fb0 : 0xffffff80134b3257

Kernel Extensions in backtrace:

com.apple.driver.AppleMuxControl(3.4.5)[4F710151-D347-301D-A0BA-81791B3E8D4D]@0 xffffff7f95aad000->0xffffff7f95abffff

dependency: com.apple.driver.AppleBacklightExpert(1.0.4)[B5B1F368-132E-3509-9ED5-93270E3ABB DD]@0xffffff7f95aa8000

dependency: com.apple.iokit.IOPCIFamily(2.8)[6C1D646D-7E5E-3D7F-A557-2CBA398FF878]@0xffffff 7f93ab2000

dependency: com.apple.driver.AppleGraphicsControl(3.4.5)[4A2C8548-7EF1-38A9-8817-E8CB34B8DC A6]@0xffffff7f95a94000

dependency: com.apple.iokit.IOACPIFamily(1.4)[A35915E8-C1B0-3C0F-81DF-5515BC9002FC]@0xfffff f7f939f3000

dependency: com.apple.iokit.IONDRVSupport(2.3.7)[F16E015E-1ABE-3C40-AC71-BC54F4BE442E]@0xff ffff7f93b38000

dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[9928306E-3508-3DBC-80A4-D8F1D87650D7]@0 xffffff7f93af5000

com.apple.NVDAResman(8.1.6)[39D35403-42FB-3F08-999C-9866938D6B3A]@0xffffff7f93b 4c000->0xffffff7f93deffff

dependency: com.apple.iokit.IOPCIFamily(2.8)[6C1D646D-7E5E-3D7F-A557-2CBA398FF878]@0xffffff 7f93ab2000

dependency: com.apple.iokit.IONDRVSupport(2.3.7)[F16E015E-1ABE-3C40-AC71-BC54F4BE442E]@0xff ffff7f93b38000

dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[9928306E-3508-3DBC-80A4-D8F1D87650D7]@0 xffffff7f93af5000

com.apple.nvidia.nv50hal(8.1.6)[BF3CC142-4112-3E23-BCE2-CDCFD5811DDA]@0xffffff7 f93dfb000->0xffffff7f940cefff

dependency: com.apple.NVDAResman(8.1.6)[39D35403-42FB-3F08-999C-9866938D6B3A]@0xffffff7f93b 4c000

dependency: com.apple.iokit.IOPCIFamily(2.8)[6C1D646D-7E5E-3D7F-A557-2CBA398FF878]@0xffffff 7f93ab2000

com.apple.driver.AGPM(100.13.12)[40BECF44-B2F1-3933-8074-AD07B38CA43A]@0xffffff 7f95a7a000->0xffffff7f95a8bfff

dependency: com.apple.iokit.IOPCIFamily(2.8)[6C1D646D-7E5E-3D7F-A557-2CBA398FF878]@0xffffff 7f93ab2000

dependency: com.apple.driver.IOPlatformPluginFamily(5.4.1d13)[04F9C88C-92F3-300B-8C68-4A0B5 F7D8C94]@0xffffff7f94572000

dependency: com.apple.iokit.IONDRVSupport(2.3.7)[F16E015E-1ABE-3C40-AC71-BC54F4BE442E]@0xff ffff7f93b38000

dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[9928306E-3508-3DBC-80A4-D8F1D87650D7]@0 xffffff7f93af5000

BSD process name corresponding to current thread: kernel_task

Mac OS version:

12F45

Kernel version:

Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64

Kernel UUID: EA38B02E-2B88-309F-BA68-1DE29F605DD8

Kernel slide: 0x0000000013200000

Kernel text base: 0xffffff8013400000

System model name: MacBookPro6,2 (Mac-F22586C8)

System uptime in nanoseconds: 4717627868276

last loaded kext at 285675246754: com.apple.filesystems.msdosfs 1.8.1 (addr 0xffffff7f95bbe000, size 65536)

last unloaded kext at 346723573122: com.apple.filesystems.msdosfs 1.8.1 (addr 0xffffff7f95bbe000, size 57344)

loaded kexts:

com.apple.filesystems.smbfs 1.8.4

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.iokit.IOBluetoothSerialManager 4.1.7f4

com.apple.driver.AudioAUUC 1.60

com.apple.driver.AGPM 100.13.12

com.apple.driver.AppleMikeyHIDDriver 124

com.apple.filesystems.autofs 3.0

com.apple.driver.AppleHDA 2.4.7fc4

com.apple.driver.AppleIntelHDGraphics 8.1.6

com.apple.GeForce 8.1.6

com.apple.driver.AppleSMCLMU 2.0.3d0

com.apple.driver.AppleUpstreamUserClient 3.5.12

com.apple.iokit.IOUserEthernet 1.0.0d1

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.ApplePolicyControl 3.4.5

com.apple.driver.AppleIntelHDGraphicsFB 8.1.6

com.apple.driver.AppleSMCPDRC 1.0.0

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.1.7f4

com.apple.driver.AppleMikeyDriver 2.4.7fc4

com.apple.driver.AppleLPC 1.6.3

com.apple.driver.AppleMuxControl 3.4.5

com.apple.driver.AppleMCCSControl 1.1.11

com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0

com.apple.driver.AppleSMBusPCI 1.0.11d1

com.apple.driver.SMCMotionSensor 3.0.3d1

com.apple.driver.AppleUSBTCButtons 237.1

com.apple.driver.AppleUSBTCKeyboard 237.1

com.apple.driver.AppleIRController 320.15

com.apple.driver.AppleUSBCardReader 3.3.1

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.BootCache 34

com.apple.iokit.SCSITaskUserClient 3.5.6

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.3.5

com.apple.driver.AppleUSBHub 635.4.0

com.apple.driver.AppleFWOHCI 4.9.9

com.apple.driver.AirPort.Brcm4331 615.20.17

com.apple.iokit.AppleBCM5701Ethernet 3.6.2b4

com.apple.driver.AppleAHCIPort 2.6.6

com.apple.driver.AppleUSBEHCI 621.4.6

com.apple.driver.AppleSmartBatteryManager 161.0.0

com.apple.driver.AppleACPIButtons 1.8

com.apple.driver.AppleRTC 1.5

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleSMBIOS 1.9

com.apple.driver.AppleACPIEC 1.8

com.apple.driver.AppleAPIC 1.7

com.apple.driver.AppleIntelCPUPowerManagementClient 214.0.0

com.apple.nke.applicationfirewall 4.0.39

com.apple.security.quarantine 2.1

com.apple.driver.AppleIntelCPUPowerManagement 214.0.0

com.apple.iokit.IOSerialFamily 10.0.6

com.apple.kext.triggers 1.0

com.apple.driver.DspFuncLib 2.4.7fc4

com.apple.iokit.IOAudioFamily 1.9.2fc7

com.apple.kext.OSvKernDSPLib 1.12

com.apple.iokit.IOSurface 86.0.4

com.apple.iokit.IOBluetoothFamily 4.1.7f4

com.apple.iokit.IOFireWireIP 2.2.5

com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.1.7f4

com.apple.nvidia.nv50hal 8.1.6

com.apple.NVDAResman 8.1.6

com.apple.driver.AppleHDAController 2.4.7fc4

com.apple.iokit.IOHDAFamily 2.4.7fc4

com.apple.driver.AppleGraphicsControl 3.4.5

com.apple.driver.AppleBacklightExpert 1.0.4

com.apple.driver.AppleSMBusController 1.0.11d1

com.apple.driver.IOPlatformPluginLegacy 1.0.0

com.apple.driver.IOPlatformPluginFamily 5.4.1d13

com.apple.iokit.IONDRVSupport 2.3.7

com.apple.iokit.IOGraphicsFamily 2.3.7

com.apple.driver.AppleSMC 3.1.5d4

com.apple.driver.AppleUSBMultitouch 237.3

com.apple.iokit.IOUSBHIDDriver 623.4.0

com.apple.iokit.IOSCSIBlockCommandsDevice 3.5.6

com.apple.iokit.IOUSBMassStorageClass 3.5.2

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.5.6

com.apple.iokit.IOBDStorageFamily 1.7

com.apple.iokit.IODVDStorageFamily 1.7.1

com.apple.iokit.IOCDStorageFamily 1.7.1

com.apple.driver.AppleUSBMergeNub 621.4.6

com.apple.driver.AppleUSBComposite 621.4.0

com.apple.iokit.IOAHCISerialATAPI 2.5.5

com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.6

com.apple.iokit.IOFireWireFamily 4.5.5

com.apple.iokit.IOUSBUserClient 630.4.4

com.apple.iokit.IO80211Family 530.5

com.apple.iokit.IOEthernetAVBController 1.0.2b1

com.apple.iokit.IONetworkingFamily 3.0

com.apple.iokit.IOAHCIFamily 2.5.1

com.apple.iokit.IOUSBFamily 635.4.0

com.apple.driver.AppleEFINVRAM 2.0

com.apple.driver.AppleEFIRuntime 2.0

com.apple.iokit.IOHIDFamily 1.8.1

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 220.3

com.apple.kext.AppleMatch 1.0.0d1

com.apple.security.TMSafetyNet 7

com.apple.driver.DiskImages 345

com.apple.iokit.IOStorageFamily 1.8

com.apple.driver.AppleKeyStore 28.21

com.apple.driver.AppleACPIPlatform 1.8

com.apple.iokit.IOPCIFamily 2.8

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.corecrypto 1.0

Model: MacBookPro6,2, BootROM MBP61.0057.B0F, 2 processors, Intel Core i7, 2.8 GHz, 8 GB, SMC 1.58f16

Graphics: Intel HD Graphics, Intel HD Graphics, Built-In, 288 MB

Graphics: NVIDIA GeForce GT 330M, NVIDIA GeForce GT 330M, PCIe, 512 MB

Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1067 MHz, 0x0198, 0x393930353432382D3030352E4130324C4620

Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1067 MHz, 0x0198, 0x393930353432382D3030352E4130324C4620

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x93), Broadcom BCM43xx 1.0 (5.106.98.100.17)

Bluetooth: Version 4.1.7f4 12974, 3 service, 13 devices, 3 incoming serial ports

Network Service: AirPort, AirPort, en1

Serial ATA Device: TOSHIBA MK5055GSXF, 500,11 GB

Serial ATA Device: MATSHITADVD-R UJ-898

USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2

USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0xfa130000 / 5

USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 4

USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8218, 0xfa113000 / 8

USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0236, 0xfa120000 / 3

USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2

USB Device: Built-in iSight, apple_vendor_id, 0x8507, 0xfd110000 / 4

USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd120000 / 3

I need help as soon as possible to solve this problem

Raphael