Recurrent Kernel Panics on 2007 Macbook Pro

I've been having a horrible time with kernel panics during the past couple of weeks.
Booting is touch and go-- sometimes it works, sometimes doesn't.
The problem occurred after the computer started to freeze; the screen will flash black, the cursor will still move, but nothing is clickable. After shutting down and trying to restart, kernel panic appears and continues reappearing after each restart attempt.

When I am able to boot, I get the following error report:
Interval Since Last Panic Report: 95031 sec
Panics Since Last Report: 8
Anonymous UUID: 90F4D27B-F93F-464B-A71E-98D7A3FCB19A

Sun Feb 14 20:05:25 2010
panic(cpu 1 caller 0x2a7ac2): Kernel trap at 0x009a925e, type 14=page fault, registers:
CR0: 0x8001003b, CR2: 0x000000c0, CR3: 0x0759e000, CR4: 0x00000660
EAX: 0x360d35c0, EBX: 0x05a99804, ECX: 0x05389020, EDX: 0x00000000
CR2: 0x000000c0, EBP: 0x360d35f8, ESI: 0x00000000, EDI: 0xffffffff
EFL: 0x00010246, EIP: 0x009a925e, CS: 0x00000008, DS: 0x05380010
Error code: 0x00000000

Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)
0x360d3388 : 0x21b2bd (0x5cf868 0x360d33bc 0x223719 0x0)
0x360d33d8 : 0x2a7ac2 (0x591c30 0x9a925e 0xe 0x591dfa)
0x360d34b8 : 0x29d968 (0x360d34d0 0x3 0x360d35f8 0x9a925e)
0x360d34c8 : 0x9a925e (0xe 0x48 0x360d0010 0x9c0010)
0x360d35f8 : 0x9af6cb (0xc1d0000e 0x1000000 0x1000003 0x40)
0x360d3678 : 0x9d37bd (0x360d3808 0x9 0x0 0x0)
0x360d37d8 : 0x9d53f8 (0x0 0x600d600d 0x7027 0x360d3808)
0x360d38a8 : 0xb908e4 (0xc1d0000e 0x1000000 0x1000003 0x40)
0x360d38d8 : 0xb9f110 (0x252a2000 0x1000000 0x88100090 0x3e)
0x360d3938 : 0xba0dc6 (0x252a2000 0x1000000 0x15 0x252a201c)
0x360d3a48 : 0x972832 (0x252a2000 0x0 0x360d3b8a 0x80)
0x360d3aa8 : 0x968796 (0x5f01000 0x0 0x360d3b8a 0x80)
0x360d3bd8 : 0x9657ff (0x5f01000 0x5ec2d80 0x96392a 0x5f01000)
0x360d3c98 : 0x954189 (0x5f01000 0x959304 0x5eea280 0x297241)
0x360d3d08 : 0x950b98 (0x5f01000 0x360d3dcc 0x59381f4 0x213c78)
0x360d3d38 : 0x534299 (0x5f01000 0x59381f4 0x59381f4 0x0)
0x360d3d88 : 0x564c1c (0x5f01000 0x59381f4 0x59381f4 0x0)
0x360d3de8 : 0x284dfd (0x5f01000 0x59381f4 0x0 0x0)
0x360d3e58 : 0x21d65f (0x56fc068 0x60d4584 0x56fc06c 0x56fc0a4)
0x360d3e98 : 0x2107f7 (0x56fc000 0x360d3edc 0x2a6947c 0x360d3ed0)
Backtrace continues...
Kernel Extensions in backtrace (with dependencies):
com.apple.NVDAResman(6.0.6)@0x96f000->0xc21fff
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x932000
dependency: com.apple.iokit.IONDRVSupport(2.0)@0x961000
dependency: com.apple.iokit.IOGraphicsFamily(2.0)@0x943000
com.apple.iokit.IONDRVSupport(2.0)@0x961000->0x96efff
dependency: com.apple.iokit.IOGraphicsFamily(2.0)@0x943000
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x932000
com.apple.iokit.IOGraphicsFamily(2.0)@0x943000->0x960fff
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x932000

BSD process name corresponding to current thread: WindowServer

Mac OS version:
10C540

Kernel version:
Darwin Kernel Version 10.2.0: Tue Nov 3 10:37:10 PST 2009; root:xnu-1486.2.11~1/RELEASE_I386
System model name: MacBookPro3,1 (Mac-F4238BC8)

System uptime in nanoseconds: 34527341609
unloaded kexts:
(none)
loaded kexts:
com.protectmac.kext.AntiVirus 1.0.3 - last loaded 26856296720
com.apple.driver.AppleTyMCEDriver 1.0.1d8
com.apple.filesystems.autofs 2.1.0
com.apple.driver.IOBluetoothBNEPDriver 2.2.4f3
com.apple.driver.InternalModemSupport 2.6.0
com.apple.driver.AppleHDA 1.7.9a4
com.apple.driver.AppleUpstreamUserClient 3.1.0
com.apple.driver.AudioAUUC 1.0
com.apple.driver.AppleLPC 1.4.9
com.apple.driver.SMCMotionSensor 3.0.0d4
com.apple.kext.AppleSMCLMU 1.4.5d1
com.apple.driver.AirPort.Atheros 421.19.8
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AudioIPCDriver 1.1.2
com.apple.driver.AppleGraphicsControl 2.8.16
com.apple.driver.AppleBacklight 170.0.14
com.apple.driver.AppleIntelYonahProfile 14
com.apple.GeForce 6.0.6
com.apple.driver.AppleIntelPenrynProfile 17
com.apple.driver.AppleIntelNehalemProfile 11
com.apple.driver.AppleIntelMeromProfile 19
com.apple.driver.ACPI_SMC_PlatformPlugin 4.0.1d0
com.apple.driver.AppleUSBTrackpad 1.8.0b4
com.apple.driver.AppleUSBTCKeyEventDriver 1.8.0b4
com.apple.driver.AppleUSBTCKeyboard 1.8.0b4
com.apple.driver.AppleIRController 251.1.4
com.apple.driver.CSRHIDTransitionDriver 2.2.4f3
com.apple.iokit.SCSITaskUserClient 2.6.0
com.apple.iokit.IOAHCIBlockStorage 1.6.0
com.apple.BootCache 31
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.driver.AppleUSBHub 3.8.4
com.apple.driver.AppleFWOHCI 4.4.0
com.apple.driver.AppleAHCIPort 2.0.1
com.apple.driver.AppleIntelPIIXATA 2.5.0
com.apple.driver.AppleSmartBatteryManager 160.0.0
com.apple.driver.AppleUSBEHCI 3.7.5
com.apple.driver.AppleUSBUHCI 3.7.5
com.apple.iokit.AppleYukon2 3.1.14b1
com.apple.driver.AppleEFINVRAM 1.3.0
com.apple.driver.AppleRTC 1.3
com.apple.driver.AppleHPET 1.4
com.apple.driver.AppleACPIButtons 1.3
com.apple.driver.AppleSMBIOS 1.4
com.apple.driver.AppleACPIEC 1.3
com.apple.driver.AppleAPIC 1.4
com.apple.driver.AppleIntelCPUPowerManagementClient 96.0.0
com.apple.security.sandbox 0
com.apple.security.quarantine 0
com.apple.nke.applicationfirewall 2.1.11
com.apple.driver.AppleIntelCPUPowerManagement 96.0.0
com.apple.driver.AppleHDAPlatformDriver 1.7.9a4
com.apple.driver.AppleHDAHardwareConfigDriver 1.7.9a4
com.apple.driver.DspFuncLib 1.7.9a4
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 310.6
com.apple.driver.AppleHDAController 1.7.9a4
com.apple.iokit.IOHDAFamily 1.7.9a4
com.apple.iokit.IOSurface 73.0
com.apple.iokit.IOBluetoothSerialManager 2.2.4f3
com.apple.iokit.IOSerialFamily 10.0.3
com.apple.iokit.IOAudioFamily 1.7.2fc1
com.apple.kext.OSvKernDSPLib 1.3
com.apple.iokit.AppleProfileFamily 41
com.apple.driver.AppleSMC 3.0.1d2
com.apple.driver.IOPlatformPluginFamily 4.0.1d0
com.apple.nvidia.nv50hal 6.0.6
com.apple.NVDAResman 6.0.6
com.apple.iokit.IONDRVSupport 2.0
com.apple.iokit.IOGraphicsFamily 2.0
com.apple.driver.CSRUSBBluetoothHCIController 2.2.4f3
com.apple.driver.AppleUSBBluetoothHCIController 2.2.4f3
com.apple.iokit.IOBluetoothFamily 2.2.4f3
com.apple.iokit.IOUSBHIDDriver 3.8.4
com.apple.driver.AppleUSBMergeNub 3.8.5
com.apple.driver.AppleUSBComposite 3.7.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.0
com.apple.iokit.IOBDStorageFamily 1.6
com.apple.iokit.IODVDStorageFamily 1.6
com.apple.iokit.IOCDStorageFamily 1.6
com.apple.driver.XsanFilter 402.1
com.apple.iokit.IOATAPIProtocolTransport 2.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.0
com.apple.driver.AppleFileSystemDriver 2.0
com.apple.iokit.IOUSBUserClient 3.8.5
com.apple.iokit.IOFireWireFamily 4.1.7
com.apple.iokit.IOAHCIFamily 2.0.2
com.apple.iokit.IOATAFamily 2.5.0
com.apple.iokit.IOUSBFamily 3.8.5
com.apple.iokit.IONetworkingFamily 1.9
com.apple.driver.AppleEFIRuntime 1.3.0
com.apple.iokit.IOHIDFamily 1.6.1
com.apple.iokit.IOSMBusFamily 1.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 6
com.apple.driver.DiskImages 281
com.apple.iokit.IOStorageFamily 1.6
com.apple.driver.AppleACPIPlatform 1.3
com.apple.iokit.IOPCIFamily 2.6
com.apple.iokit.IOACPIFamily 1.3.0
Model: MacBookPro3,1, BootROM MBP31.0070.B07, 2 processors, Intel Core 2 Duo, 2.4 GHz, 2 GB, SMC 1.16f11
Graphics: NVIDIA GeForce 8600M GT, GeForce 8600M GT, PCIe, 256 MB
Memory Module: global_name
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x87), Atheros 5416: 2.0.19.8
Bluetooth: Version 2.2.4f3, 2 service, 1 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
PCI Card: pci168c,24, sppci_othernetwork, PCI Slot 5
Serial ATA Device: ST9160823AS, 149.05 GB
Parallel ATA Device: HL-DT-ST DVDRW GSA-S10N
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8502, 0xfd400000
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x021a, 0x5d200000
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0x5d100000
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8205, 0x1a100000

I've tried going into single user mode and using fsck -fy, and I've reset the PRAM. Fsck -fy helped at first, but a day later, I'm still having the problem.
Software is up-to-date.
It's a 15-inch 2.4/2.2GHz (early-mid 2007) Macbook Pro.

Anybody know what might be going on? I'm a college student and not having a reliable computer is SUPER frustrating. I really, really appreciate all help!

Thanks,
Sarah

Sounds like one of the macs with the bad run of NVIDIA cards. I recommend contacting Apple Support and they might be as nice as to replace it for you free of charge. I have a friend who had a very similar issue and I think Apple Support is the best way to go with this one. There's not much we can do for you here other than to tell you to reinstall and let us know if you are still having the problem. If so then we would tell you to call Apple. Even if Apple would charge you for repair, it's a lot cheaper than getting a whole new system. (oh, and if they replace your Macbook they MIGHT even give you a new version -- happened to my friend).