She is semi-technologically challenged, however, due to my lack of knowledge of Mac Systems, I can't really comment on as to how to fix the problem.
I was able to get a strong analysis of the problem, so here goes:
Background info:
White Macbook was purchased online in August (2010) (new).
(yea, that's about it..)
The problem:
"its happened the past few months obviously far apart, like weeks, remember i bought this in august online"
Occurs when the macbook freezes (probably because of overheating?)
Once the macbook freezes, the following message pops up:
"You need to restart your computer. Hold down the Power button until it turns off, then press the Power button again."
(looks like this:

)
"well after i followed the instructions when the computer turned on and everything and it went normal but the msg i sent you in your inbox on fb pops up and it says like send report to apple so they can fix this etc"
The message that I received is:
-21
Interval Since Last Panic Report: 174461 sec
Panics Since Last Report: 1
Anonymous UUID: 5260BB53-CEE5-47FE-8F9D-47B2A8FBB1FF
Sat Mar 12 23:06:59 2011
panic(cpu 0 caller 0x27a3a5): "vm_page_reactivate_local: count = 253, vm_page_local_count = 251\n"@/SourceCache/xnu/xnu-1504.9.26/osfmk/vm/vm_resident.c:3193
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x4696b8d8 : 0x21b50c (0x5d4438 0x4696b90c 0x223974 0x0)
0x4696b928 : 0x27a3a5 (0x590130 0xfd 0xfb 0x274df88)
0x4696b968 : 0x2550be (0x0 0x0 0x0 0x6063f)
0x4696b9d8 : 0x257f93 (0x43518fc 0x5203b54 0x3f1000 0x1)
0x4696bb28 : 0x2aa8b2 (0x2d99334 0x3f1000 0x1 0x3)
0x4696bc08 : 0x2a09a8 (0x4696bc20 0x239a3cac 0x4696bd38 0x2a1684)
0x4696bc18 : 0x2a1684 (0xe 0x48 0x10 0x70)
0x4696bd38 : 0x2663d7 (0x8714a34 0x86 0x0 0x0)
0x4696bda8 : 0x266623 (0x0 0x84baa0 0x4696be38 0x226d68)
0x4696be78 : 0x20e452 (0x2d99334 0x4696bea8 0x8714a00 0x5980b60)
0x4696bec8 : 0x20ead4 (0x6863598 0x68635a8 0x1 0x2d99334)
0x4696bf28 : 0x20f163 (0x6863500 0x51adcc0 0x2d99334 0x0)
0x4696bf48 : 0x216adb (0x6863500 0x51adcc0 0x2d99334 0x0)
0x4696bfa8 : 0x216e35 (0x0 0x1 0x22f3c9 0x520d004)
0x4696bfc8 : 0x2a06cc (0x0 0x0 0x2a06db 0x520d004)
BSD process name corresponding to current thread: configd
Mac OS version:
10J567
Kernel version:
Darwin Kernel Version 10.6.0: Wed Nov 10 18:13:17 PST 2010; root:xnu-1504.9.26~3/RELEASE_I386
System model name: MacBook7,1 (Mac-F22C89C8)
System uptime in nanoseconds: 35603012035983
unloaded kexts:
com.apple.driver.AppleMCP89RootPortPM 1.11 (addr 0x11c7000, size 0x20480) - last unloaded 222507662377
loaded kexts:
com.apple.driver.AppleHWSensor 1.9.3d0 - last loaded 23427095175
com.apple.filesystems.autofs 2.1.0
com.apple.driver.AGPM 100.12.19
com.apple.driver.AppleUpstreamUserClient 3.4.5
com.apple.driver.AppleMCCSControl 1.0.17
com.apple.driver.AppleHDA 1.9.9f12
com.apple.driver.AppleMikeyHIDDriver 1.2.0
com.apple.driver.AudioAUUC 1.13
com.apple.driver.AppleLPC 1.4.12
com.apple.driver.SMCMotionSensor 3.0.0d4
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AudioIPCDriver 1.1.6
com.apple.driver.AppleMikeyDriver 1.9.9f12
com.apple.driver.AppleIntelPenrynProfile 17
com.apple.driver.ACPI_SMC_PlatformPlugin 4.5.0d5
com.apple.driver.AppleBacklight 170.0.34
com.apple.GeForce 6.2.6
com.apple.driver.AppleUSBTCButtons 200.3.2
com.apple.driver.AppleUSBTCKeyboard 200.3.2
com.apple.iokit.SCSITaskUserClient 2.6.5
com.apple.iokit.IOAHCIBlockStorage 1.6.3
com.apple.driver.AirPortBrcm43224 426.36.1
com.apple.BootCache 31
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.driver.AppleSmartBatteryManager 160.0.0
com.apple.driver.AppleUSBHub 4.1.7
com.apple.driver.AppleAHCIPort 2.1.5
com.apple.nvenet 2.0.15
com.apple.driver.AppleUSBEHCI 4.1.7
com.apple.driver.AppleEFINVRAM 1.4.0
com.apple.driver.AppleRTC 1.3.1
com.apple.driver.AppleHPET 1.5
com.apple.driver.AppleUSBOHCI 4.1.5
com.apple.driver.AppleACPIButtons 1.3.5
com.apple.driver.AppleSMBIOS 1.6
com.apple.driver.AppleACPIEC 1.3.5
com.apple.driver.AppleAPIC 1.4
com.apple.driver.AppleIntelCPUPowerManagementClient 105.13.0
com.apple.security.sandbox 1
com.apple.security.quarantine 0
com.apple.nke.applicationfirewall 2.1.11
com.apple.driver.AppleIntelCPUPowerManagement 105.13.0
com.apple.driver.DspFuncLib 1.9.9f12
com.apple.driver.AppleProfileReadCounterAction 17
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.nvidia.nv50hal 6.2.6
com.apple.iokit.IOSurface 74.2
com.apple.iokit.IOBluetoothSerialManager 2.3.8f7
com.apple.iokit.IOSerialFamily 10.0.3
com.apple.iokit.IOAudioFamily 1.8.0fc1
com.apple.kext.OSvKernDSPLib 1.3
com.apple.driver.AppleHDAController 1.9.9f12
com.apple.iokit.IOHDAFamily 1.9.9f12
com.apple.driver.AppleSMBusController 1.0.8d0
com.apple.iokit.AppleProfileFamily 41
com.apple.driver.AppleSMC 3.1.0d3
com.apple.driver.IOPlatformPluginFamily 4.5.0d5
com.apple.driver.AppleSMBusPCI 1.0.8d0
com.apple.NVDAResman 6.2.6
com.apple.iokit.IONDRVSupport 2.2
com.apple.iokit.IOGraphicsFamily 2.2
com.apple.driver.BroadcomUSBBluetoothHCIController 2.3.8f7
com.apple.driver.AppleUSBBluetoothHCIController 2.3.8f7
com.apple.iokit.IOBluetoothFamily 2.3.8f7
com.apple.driver.AppleUSBMultitouch 206.6
com.apple.iokit.IOUSBHIDDriver 4.1.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.5
com.apple.iokit.IOBDStorageFamily 1.6
com.apple.iokit.IODVDStorageFamily 1.6
com.apple.iokit.IOCDStorageFamily 1.6
com.apple.driver.AppleUSBMergeNub 4.1.5
com.apple.driver.AppleUSBComposite 3.9.0
com.apple.iokit.IOAHCISerialATAPI 1.2.5
com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.5
com.apple.driver.XsanFilter 402.1
com.apple.iokit.IO80211Family 312
com.apple.iokit.IOUSBUserClient 4.1.5
com.apple.iokit.IOAHCIFamily 2.0.4
com.apple.iokit.IONetworkingFamily 1.9
com.apple.driver.NVSMU 2.2.7
com.apple.driver.AppleEFIRuntime 1.4.0
com.apple.iokit.IOUSBFamily 4.1.7
com.apple.iokit.IOHIDFamily 1.6.5
com.apple.iokit.IOSMBusFamily 1.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 6
com.apple.driver.DiskImages 289
com.apple.iokit.IOStorageFamily 1.6.2
com.apple.driver.AppleACPIPlatform 1.3.5
com.apple.iokit.IOPCIFamily 2.6
com.apple.iokit.IOACPIFamily 1.3.0
And I guess it happens again when the macbook freezes.
Can anyone shed some light as to what the problem is?
Thanks again,
Blue
update- Time machine was never really setup :S
Edited by bluegang6, 12 March 2011 - 10:46 PM.