kernel panic error code 0x00000000

Hi! I had several kernel panics during the last month and can't find the error. First I thought it was my safari and changed to firefox - then it was better but the problem startet again. Could please anybody help? I have the old 10.6.8 on an mac book pro 17 ''. shown kexts are always only from apple.... thx.
This is the last code (have some others too):

Interval Since Last Panic Report: 26483 sec

Panics Since Last Report: 4

Anonymous UUID: 59AD9FF6-8B7B-4BFB-816F-064503374A45

Tue Sep 9 09:56:42 2014

panic(cpu 1 caller 0x2abf6a): Kernel trap at 0x005085c8, type 14=page fault, registers:

CR0: 0x80010033, CR2: 0x302c644c, CR3: 0x239ae000, CR4: 0x00000660

EAX: 0x302c6434, EBX: 0x063c00c0, ECX: 0x0085f884, EDX: 0x063c00c0

CR2: 0x302c644c, EBP: 0x49433d18, ESI: 0x06e03200, EDI: 0x00000000

EFL: 0x00010206, EIP: 0x005085c8, CS: 0x00000008, DS: 0x06eb0010

Error code: 0x00000000

Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)

0x49433b28 : 0x21b837 (0x5dd7fc 0x49433b5c 0x223ce1 0x0)

0x49433b78 : 0x2abf6a (0x59e3d0 0x5085c8 0xe 0x59e59a)

0x49433c58 : 0x2a1a78 (0x49433c70 0x246 0x49433d18 0x5085c8)

0x49433c68 : 0x5085c8 (0xe 0x48 0x10 0x10)

0x49433d18 : 0x508887 (0x6e03200 0x63c00c0 0x49433d58 0x6eb2c80)

0x49433d38 : 0x53974f (0x63c00c0 0x6333e00 0x0 0x6eb2c80)

0x49433d58 : 0x53966e (0x6eb2c80 0x64cb900 0x0 0x6eb2c80)

0x49433d78 : 0x53fdf6 (0x6eb2c80 0x6e99800 0x0 0x51723f)

0x49433dc8 : 0x53fea7 (0x6e99800 0x4 0x0 0xe00002c1)

0x49433de8 : 0x56fa2b (0x6e99800 0x85f8a0 0x49433e18 0x2aac45)

0x49433e08 : 0x28c3e3 (0x62d56c0 0xb1c9868 0x49433e3c 0x29aca1)

0x49433e58 : 0x21dbe5 (0xb1c9840 0x75da290 0x11c9a8 0x3903)

0x49433e98 : 0x210a86 (0xb1c9800 0x0 0xb220340 0x62d56c0)

0x49433ef8 : 0x216f84 (0xb1c9800 0x0 0x0 0x0)

0x49433f78 : 0x295c57 (0x65b5ea8 0x0 0x0 0x0)

0x49433fc8 : 0x2a256d (0x65b5ea4 0x0 0x10 0x632c764)

BSD process name corresponding to current thread: Finder

Mac OS version:

10K549

Kernel version:

Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386

System model name: MacBookPro2,1 (Mac-F42189C8)

System uptime in nanoseconds: 818383560637

unloaded kexts:

com.apple.driver.AppleFileSystemDriver 2.0 (addr 0xcf1000, size 0x12288) - last unloaded 109668832577

loaded kexts:

com.apple.filesystems.cd9660 1.4.1 - last loaded 816677362780

com.apple.filesystems.autofs 2.1.0

com.apple.driver.AppleHWSensor 1.9.3d0

com.apple.driver.AppleHDA 2.0.5f14

com.apple.driver.AppleUpstreamUserClient 3.5.7

com.apple.driver.AppleMCCSControl 1.0.20

com.apple.driver.AudioAUUC 1.57

com.apple.driver.AppleLPC 1.5.1

com.apple.kext.ATIFramebuffer 6.3.6

com.apple.driver.SMCMotionSensor 3.0.1d2

com.apple.driver.AirPort.Atheros21 425.14.7

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AudioIPCDriver 1.1.6

com.apple.driver.AppleIntelMeromProfile 19

com.apple.driver.ACPI_SMC_PlatformPlugin 4.7.0a1

com.apple.driver.AppleBacklight 170.0.46

com.apple.ATIRadeonX1000 6.3.6

com.apple.kext.AppleSMCLMU 1.5.2d10

com.apple.driver.AppleUSBTrackpad 201.6

com.apple.driver.AppleUSBTCKeyEventDriver 201.6

com.apple.driver.AppleUSBTCKeyboard 201.6

com.apple.driver.AppleIRController 303.8

com.apple.iokit.IOAHCIBlockStorage 1.6.4

com.apple.iokit.SCSITaskUserClient 2.6.8

com.apple.driver.AppleFWOHCI 4.7.3

com.apple.iokit.AppleYukon2 3.2.1b1

com.apple.driver.AppleUSBHub 4.2.4

com.apple.BootCache 31.1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.driver.AppleAHCIPort 2.1.7

com.apple.driver.AppleIntelPIIXATA 2.5.1

com.apple.driver.AppleHPET 1.5

com.apple.driver.AppleSmartBatteryManager 160.0.0

com.apple.driver.AppleUSBEHCI 4.2.4

com.apple.driver.AppleUSBUHCI 4.2.0

com.apple.driver.AppleEFINVRAM 1.4.0

com.apple.driver.AppleRTC 1.3.1

com.apple.driver.AppleACPIButtons 1.3.6

com.apple.driver.AppleSMBIOS 1.7

com.apple.driver.AppleACPIEC 1.3.6

com.apple.driver.AppleAPIC 1.4

com.apple.driver.AppleIntelCPUPowerManagementClient 142.6.0

com.apple.security.sandbox 1

com.apple.security.quarantine 0

com.apple.nke.applicationfirewall 2.1.14

com.apple.driver.AppleIntelCPUPowerManagement 142.6.0

com.apple.driver.DspFuncLib 2.0.5f14

com.apple.driver.AppleProfileReadCounterAction 17

com.apple.iokit.IOFireWireIP 2.0.3

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.iokit.IO80211Family 320.1

com.apple.iokit.IOSurface 74.2

com.apple.iokit.IOBluetoothSerialManager 2.4.5f3

com.apple.iokit.IOSerialFamily 10.0.3

com.apple.iokit.IOAudioFamily 1.8.3fc2

com.apple.kext.OSvKernDSPLib 1.3

com.apple.driver.AppleHDAController 2.0.5f14

com.apple.iokit.IOHDAFamily 2.0.5f14

com.apple.iokit.AppleProfileFamily 41

com.apple.driver.IOPlatformPluginFamily 4.7.0a1

com.apple.driver.AppleBacklightExpert 1.0.1

com.apple.iokit.IONDRVSupport 2.2.1

com.apple.driver.AppleSMC 3.1.0d5

com.apple.kext.ATI1600Controller 6.3.6

com.apple.kext.ATISupport 6.3.6

com.apple.iokit.IOGraphicsFamily 2.2.1

com.apple.driver.CSRUSBBluetoothHCIController 2.4.5f3

com.apple.driver.AppleUSBBluetoothHCIController 2.4.5f3

com.apple.iokit.IOBluetoothFamily 2.4.5f3

com.apple.driver.AppleUSBMergeNub 4.2.4

com.apple.driver.AppleUSBHIDMouse 162

com.apple.iokit.IOUSBHIDDriver 4.2.0

com.apple.driver.AppleHIDMouse 162

com.apple.driver.AppleUSBComposite 3.9.0

com.apple.driver.XsanFilter 402.1

com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.8

com.apple.iokit.IOBDStorageFamily 1.6

com.apple.iokit.IODVDStorageFamily 1.6

com.apple.iokit.IOCDStorageFamily 1.6.1

com.apple.iokit.IOATAPIProtocolTransport 2.5.1

com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.8

com.apple.iokit.IOFireWireFamily 4.2.6

com.apple.iokit.IOUSBUserClient 4.2.4

com.apple.iokit.IONetworkingFamily 1.10

com.apple.iokit.IOAHCIFamily 2.0.6

com.apple.iokit.IOATAFamily 2.5.1

com.apple.iokit.IOUSBFamily 4.2.4

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 289.1

com.apple.iokit.IOStorageFamily 1.6.3

com.apple.driver.AppleACPIPlatform 1.3.6

com.apple.iokit.IOPCIFamily 2.6.5

com.apple.iokit.IOACPIFamily 1.3.0