My MacBook crashes several times a day. What's going on?

It crashed as I was trying to write this! I got the black box saying your computer needs to restart. What is going on? It's acting like a PC? Is there an app I can run to check or clean it? How do I clean the Windows 7 side?

Here's the report if anyone can understand this:

Interval Since Last Panic Report: 373222 sec

Panics Since Last Report: 4

Anonymous UUID: 7A418D19-3FB6-43A5-A2BE-F65D4B132B27

Tue Jun 12 21:02:19 2012

panic(cpu 0 caller 0xffffff80002c473a): Kernel trap at 0xffffff80002b4c40, type 14=page fault, registers:

CR0: 0x0000000080010033, CR2: 0x0000000000000210, CR3: 0x000000004eb49000, CR4: 0x0000000000000660

RAX: 0xffffff80008bc1f8, RBX: 0xffffff8017ce64c0, RCX: 0x0000000009000000, RDX: 0xffffff80008959c0

RSP: 0xffffff807850ba38, RBP: 0xffffff807850ba60, RSI: 0xffffff8017cdf3c0, RDI: 0x0000000000000210

R8: 0x0000000000000000, R9: 0xffffff8017ce64c0, R10: 0x0000000000000020, R11: 0x0000000000000000

R12: 0xffffff8017ce64c2, R13: 0x0000000000000008, R14: 0x0000000000000200, R15: 0x0000000000000210

RFL: 0x0000000000010287, RIP: 0xffffff80002b4c40, CS: 0x0000000000000008, SS: 0x0000000000000010

CR2: 0x0000000000000210, Error code: 0x0000000000000000, Faulting CPU: 0x0

Backtrace (CPU 0), Frame : Return Address

0xffffff807850b6e0 : 0xffffff8000220792

0xffffff807850b760 : 0xffffff80002c473a

0xffffff807850b910 : 0xffffff80002da0cd

0xffffff807850b930 : 0xffffff80002b4c40

0xffffff807850ba60 : 0xffffff8000282206

0xffffff807850ba90 : 0xffffff800028300a

0xffffff807850bac0 : 0xffffff8000571179

0xffffff807850bad0 : 0xffffff80002ff971

0xffffff807850bb20 : 0xffffff80002ff59e

0xffffff807850bb60 : 0xffffff8000301996

0xffffff807850bbf0 : 0xffffff80004ddf0c

0xffffff807850bce0 : 0xffffff80004f1f7d

0xffffff807850bea0 : 0xffffff80004f50d3

0xffffff807850bef0 : 0xffffff8000302f36

0xffffff807850bf50 : 0xffffff80005cd61b

0xffffff807850bfb0 : 0xffffff80002daa13

BSD process name corresponding to current thread: mds

Mac OS version:

11E53

Kernel version:

Darwin Kernel Version 11.4.0: Mon Apr 9 19:32:15 PDT 2012; root:xnu-1699.26.8~1/RELEASE_X86_64

Kernel UUID: A8ED611D-FB0F-3729-8392-E7A32C5E7D74

System model name: MacBook6,1 (Mac-F22C8AC8)

System uptime in nanoseconds: 922811824977

last loaded kext at 47337297458: com.apple.driver.AppleHWSensor 1.9.5d0 (addr 0xffffff7f81d6e000, size 28672)

last unloaded kext at 252142075687: com.apple.driver.AppleUSBTCKeyEventDriver 225.2 (addr 0xffffff7f81b92000, size 8192)

loaded kexts:

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.filesystems.autofs 3.0

com.apple.driver.AudioAUUC 1.59

com.apple.driver.AGPM 100.12.42

com.apple.driver.AppleMikeyHIDDriver 122

com.apple.driver.AppleHDA 2.2.0f3

com.apple.driver.AppleUpstreamUserClient 3.5.9

com.apple.driver.AppleMCCSControl 1.0.26

com.apple.GeForce 7.1.8

com.apple.iokit.IOUserEthernet 1.0.0d1

com.apple.iokit.IOBluetoothSerialManager 4.0.5f11

com.apple.driver.AppleMikeyDriver 2.2.0f3

com.apple.driver.AppleBacklight 170.1.9

com.apple.driver.ACPI_SMC_PlatformPlugin 5.0.0d0

com.apple.driver.SMCMotionSensor 3.0.2d6

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AudioIPCDriver 1.2.2

com.apple.driver.AppleLPC 1.5.8

com.apple.driver.AppleUSBTCButtons 225.2

com.apple.driver.BroadcomUSBBluetoothHCIController 4.0.5f11

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.BootCache 33

com.apple.driver.AppleUSBTCKeyboard 225.2

com.apple.iokit.SCSITaskUserClient 3.2.0

com.apple.driver.XsanFilter 404

com.apple.driver.AirPort.Brcm4331 530.4.20

com.apple.iokit.IOAHCISerialATAPI 2.0.3

com.apple.iokit.IOAHCIBlockStorage 2.0.3

com.apple.driver.AppleSmartBatteryManager 161.0.0

com.apple.nvenet 2.0.17

com.apple.driver.AppleUSBHub 4.5.0

com.apple.driver.AppleUSBEHCI 4.5.8

com.apple.driver.AppleUSBOHCI 4.4.5

com.apple.driver.AppleEFINVRAM 1.5.0

com.apple.driver.AppleRTC 1.5

com.apple.driver.AppleAHCIPort 2.3.0

com.apple.driver.AppleHPET 1.6

com.apple.driver.AppleACPIButtons 1.5

com.apple.driver.AppleSMBIOS 1.8

com.apple.driver.AppleACPIEC 1.5

com.apple.driver.AppleAPIC 1.5

com.apple.driver.AppleIntelCPUPowerManagementClient 193.0.0

com.apple.nke.applicationfirewall 3.2.30

com.apple.security.quarantine 1.3

com.apple.driver.AppleIntelCPUPowerManagement 193.0.0

com.apple.kext.triggers 1.0

com.apple.driver.DspFuncLib 2.2.0f3

com.apple.nvidia.nv50hal 7.1.8

com.apple.NVDAResman 7.1.8

com.apple.iokit.IOSurface 80.0.2

com.apple.iokit.IOSerialFamily 10.0.5

com.apple.driver.AppleHDAController 2.2.0f3

com.apple.iokit.IOHDAFamily 2.2.0f3

com.apple.driver.AppleBacklightExpert 1.0.3

com.apple.driver.IOPlatformPluginLegacy 5.0.0d0

com.apple.driver.AppleSMC 3.1.3d8

com.apple.iokit.IOAudioFamily 1.8.6fc17

com.apple.kext.OSvKernDSPLib 1.3

com.apple.driver.ApplePolicyControl 3.0.16

com.apple.driver.AppleGraphicsControl 3.0.16

com.apple.iokit.IONDRVSupport 2.3.2

com.apple.iokit.IOGraphicsFamily 2.3.2

com.apple.driver.AppleSMBusController 1.0.10d0

com.apple.driver.AppleSMBusPCI 1.0.10d0

com.apple.driver.IOPlatformPluginFamily 5.1.0d17

com.apple.driver.AppleUSBBluetoothHCIController 4.0.5f11

com.apple.iokit.IOBluetoothFamily 4.0.5f11

com.apple.driver.AppleUSBMultitouch 227.1

com.apple.iokit.IOUSBHIDDriver 4.4.5

com.apple.driver.AppleUSBMergeNub 4.5.3

com.apple.driver.AppleUSBComposite 4.5.8

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.2.0

com.apple.iokit.IOBDStorageFamily 1.6

com.apple.iokit.IODVDStorageFamily 1.7

com.apple.iokit.IOCDStorageFamily 1.7

com.apple.iokit.IO80211Family 420.3

com.apple.iokit.IOSCSIArchitectureModelFamily 3.2.0

com.apple.iokit.IONetworkingFamily 2.1

com.apple.iokit.IOUSBUserClient 4.5.8

com.apple.iokit.IOUSBFamily 4.5.8

com.apple.driver.NVSMU 2.2.9

com.apple.driver.AppleEFIRuntime 1.5.0

com.apple.iokit.IOAHCIFamily 2.0.8

com.apple.iokit.IOHIDFamily 1.7.1

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 177.5

com.apple.kext.AppleMatch 1.0.0d1

com.apple.security.TMSafetyNet 7

com.apple.driver.DiskImages 331.6

com.apple.iokit.IOStorageFamily 1.7.1

com.apple.driver.AppleKeyStore 28.18

com.apple.driver.AppleACPIPlatform 1.5

com.apple.iokit.IOPCIFamily 2.6.8

com.apple.iokit.IOACPIFamily 1.4