My Snow Leopard crashes when i'm surfing the web with any browser HELP ME!!!

First of all, I'm not a native speaker.
well, i've formated my macbook pro recently, and i think i've installed some unnecessary drivers for my graphics card. Since then snow leopard has been crashing all the time when i'm surfing the web!!! Please help me!

Thanks!!

Here is the LOG:

Interval Since Last Panic Report: 126711 sec
Panics Since Last Report: 11
Anonymous UUID: C4A23E2B-D1F1-4EC5-AFCD-DF35CCB73AD2

Mon Dec 5 11:46:18 2011
panic(cpu 1 caller 0x560821): "getPhysicalSegment() out of 32b range 0xf10e70000, len 0x0, class IOGeneralMemoryDescriptor"@/SourceCache/xnu/xnu-1504.15.3/iokit/Kernel/IOMemoryDescriptor.cpp:1594
Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)
0x5937a498 : 0x21b837 (0x5dd7fc 0x5937a4cc 0x223ce1 0x0)
0x5937a4e8 : 0x560821 (0x5e6dfc 0x10e70000 0xf 0x0)
0x5937a538 : 0x55d0c2 (0x9b35d80 0x0 0x0 0x0)
0x5937a558 : 0xcadf16 (0x9b35d80 0x0 0x10000 0x0)
0x5937a5e8 : 0xc941b5 (0xaf70580 0x1f 0x1f 0x99eba00)
0x5937a6c8 : 0xce4a88 (0x9206404 0x4439a6a0 0xb2 0x14e65770)
0x5937a7d8 : 0xc77357 (0x4439a000 0x0 0x0 0x1)
0x5937a838 : 0xc7748c (0x4439a000 0x4439a5b4 0x1 0x0)
0x5937a868 : 0xc606e2 (0x4439a000 0x4439a5b4 0x1 0x0)
0x5937a8b8 : 0xc79f15 (0x44197000 0x44306000 0x0 0x0)
0x5937a908 : 0xcb6451 (0x44306000 0x0 0x1 0x507617)
0x5937a948 : 0xc7750c (0x44306000 0x0 0x1 0x504e08)
0x5937a978 : 0xc6c811 (0x44306000 0x1 0x0 0x0)
0x5937aab8 : 0xca5fdc (0x44300000 0x0 0x5937abcc 0x5937abc8)
0x5937ab68 : 0xc68d15 (0x44300000 0x0 0x5937abcc 0x5937abc8)
0x5937abe8 : 0x56da06 (0x44300000 0x0 0x5937ae3c 0x5937ac74)
0x5937ac38 : 0x56e2a5 (0xcf6f00 0x44300000 0x9edf688 0x1)
0x5937ac88 : 0x56eb59 (0x44300000 0x10 0x5937acd0 0x0)
0x5937ada8 : 0x286638 (0x44300000 0x10 0x9edf688 0x1)
0x5937be58 : 0x21dbe5 (0x9edf660 0xb30d5a0 0x1fd7e8 0x5833)
0x5937be98 : 0x210a86 (0x9edf600 0x0 0x8d1c9a0 0x995dee0)
0x5937bef8 : 0x216f84 (0x9edf600 0x0 0x0 0x0)
0x5937bf78 : 0x295c57 (0x829df48 0x0 0x0 0x0)
0x5937bfc8 : 0x2a256d (0x829df44 0x7fff 0x10 0x829df44)
Kernel Extensions in backtrace (with dependencies):
com.apple.GeForce(6.2.3)@0xc5d000->0xd12fff
dependency: com.apple.NVDAResman(3.0.4)@0x96e000
dependency: com.apple.iokit.IONDRVSupport(2.2.1)@0x961000
dependency: com.apple.iokit.IOPCIFamily(2.6.5)@0x928000
dependency: com.apple.iokit.IOGraphicsFamily(2.2.1)@0x93f000

BSD process name corresponding to current thread: WindowServer

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: MacBookPro5,5 (Mac-F2268AC8)

System uptime in nanoseconds: 447268915103
unloaded kexts:
com.apple.driver.AirPortBrcm43xx 423.91.27 (addr 0xeeb000, size 0x1900544) - last unloaded 137274014945
loaded kexts:
com.apple.filesystems.smbfs 1.6.7 - last loaded 269811738223
com.apple.driver.AppleHWSensor 1.9.3d0
com.apple.filesystems.ntfs 3.4
com.apple.driver.AGPM 100.12.31
com.apple.filesystems.autofs 2.1.0
com.apple.driver.AppleMikeyHIDDriver 1.2.0
com.apple.driver.AppleMikeyDriver 2.0.5f14
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.AppleBacklight 170.0.46
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.AppleIntelPenrynProfile 17
com.apple.driver.ACPI_SMC_PlatformPlugin 4.7.0a1
com.apple.driver.AppleLPC 1.5.1
com.apple.GeForce 6.2.3
com.apple.kext.AppleSMCLMU 1.5.2d10
com.apple.driver.AppleUSBTCButtons 201.6
com.apple.driver.AppleUSBTCKeyboard 201.6
com.apple.driver.AppleIRController 303.8
com.apple.iokit.SCSITaskUserClient 2.6.8
com.apple.driver.AppleUSBCardReader 2.6.1
com.apple.iokit.IOAHCIBlockStorage 1.6.4
com.apple.BootCache 31.1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.driver.AppleFWOHCI 4.7.3
com.apple.driver.AirPortBrcm43224 428.42.4
com.apple.driver.AppleAHCIPort 2.1.7
com.apple.nvenet 2.0.17
com.apple.driver.AppleUSBHub 4.2.4
com.apple.driver.AppleUSBOHCI 4.2.0
com.apple.driver.AppleUSBEHCI 4.2.4
com.apple.driver.AppleSmartBatteryManager 160.0.0
com.apple.driver.AppleEFINVRAM 1.4.0
com.apple.driver.AppleRTC 1.3.1
com.apple.driver.AppleHPET 1.5
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.AppleBluetoothHIDKeyboard 141.5
com.apple.driver.IOBluetoothHIDDriver 2.4.5f3
com.apple.driver.AppleHIDKeyboard 141.5
com.apple.driver.DspFuncLib 2.0.5f14
com.apple.driver.AppleProfileReadCounterAction 17
com.apple.driver.AppleSMBusController 1.0.10d0
com.apple.driver.AppleBacklightExpert 1.0.1
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.AppleHDAController 2.0.5f14
com.apple.iokit.IOHDAFamily 2.0.5f14
com.apple.iokit.IOFireWireIP 2.0.3
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.iokit.AppleProfileFamily 41
com.apple.driver.IOPlatformPluginFamily 4.7.0a1
com.apple.driver.AppleSMBusPCI 1.0.10d0
com.apple.driver.AppleSMC 3.1.0d5
com.apple.nvidia.nv50hal 3.0.4
com.apple.NVDAResman 3.0.4
com.apple.iokit.IONDRVSupport 2.2.1
com.apple.iokit.IOGraphicsFamily 2.2.1
com.apple.driver.BroadcomUSBBluetoothHCIController 2.4.5f3
com.apple.driver.AppleUSBBluetoothHCIController 2.4.5f3
com.apple.iokit.IOBluetoothFamily 2.4.5f3
com.apple.driver.AppleUSBMultitouch 207.7
com.apple.iokit.IOUSBHIDDriver 4.2.0
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.IOSCSIBlockCommandsDevice 2.6.8
com.apple.iokit.IOUSBMassStorageClass 2.6.7
com.apple.driver.AppleUSBMergeNub 4.2.4
com.apple.driver.AppleUSBComposite 3.9.0
com.apple.driver.XsanFilter 402.1
com.apple.iokit.IOAHCISerialATAPI 1.2.6
com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.8
com.apple.iokit.IOFireWireFamily 4.2.6
com.apple.iokit.IO80211Family 320.1
com.apple.iokit.IOAHCIFamily 2.0.6
com.apple.iokit.IONetworkingFamily 1.10
com.apple.driver.NVSMU 2.2.7
com.apple.iokit.IOUSBUserClient 4.2.4
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
Model: MacBookPro5,5, BootROM MBP55.00AC.B03, 2 processors, Intel Core 2 Duo, 2.53 GHz, 4 GB, SMC 1.47f2
Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB
Memory Module: global_name
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.10.131.42.4)
Bluetooth: Version 2.4.5f3, 2 service, 19 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Network Service: AirPort, AirPort, en1
Serial ATA Device: TOSHIBA MK7559GSXF, 698,64 GB
Serial ATA Device: HL-DT-ST DVDRW GS23N
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0x24400000 / 2
USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0x26500000 / 2
USB Device: Razer 1600dpi Mouse, 0x1532, 0x0002, 0x06200000 / 3
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06100000 / 2
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8213, 0x06110000 / 6
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0237, 0x04600000 / 3
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0x04500000 / 2

Resetting the PRAM might work.