My Mac Pro is consistantly crashing.

My mac is 2x 3 Ghz Quad-Core Intel Xenon - 10 gb 667 MHz DDR2- FB-DIMM.

Grpahics are ATI Radeon X1900 XT 512 MB

Software is MAC OS X Lion 10.7.5 (11G63)

This mac is always freezing, the screen turns off every once in a while. Lots of trouble.

Interval Since Last Panic Report: 87060 sec

Panics Since Last Report: 3

Anonymous UUID: 9ADCB8D1-0983-4661-AB1B-6ACEA67CDF2C

Mon Feb 4 10:28:42 2013

panic(cpu 3 caller 0x2b1391): "TLB invalidation IPI timeout: " "CPU(s) failed to respond to interrupts, unresponsive CPU bitmap: 0x24, NMIPI acks: orig: 0x0, now: 0x0"@/SourceCache/xnu/xnu-1699.32.7/osfmk/i386/pmap.c:3024

Backtrace (CPU 3), Frame : Return Address (4 potential args on stack)

0x8635bb98 : 0x2203de (0x6b08cc 0x8635bbb8 0x229fb0 0x0)

0x8635bbc8 : 0x2b1391 (0x6b8eec 0x24 0x0 0x0)

0x8635bc18 : 0x2b44d5 (0x867960 0x76790000 0x0 0x76791000)

0x8635bc78 : 0x28667e (0x1a8f80 0x0 0x0 0x8635bcb8)

0x8635bcd8 : 0x2789a1 (0x10247d10 0x0 0x0 0x1000)

0x8635bd98 : 0x27ce73 (0x0 0x76791000 0x0 0x0)

0x8635be48 : 0x221373 (0x2a4fd68 0x76790000 0x0 0x1000)

0x8635bea8 : 0x25095f (0x85fb00 0x2 0x1024f7b4 0x1024f79c)

0x8635bed8 : 0x222db6 (0xf569498 0x1024f780 0x8635bf0c 0x2c3f24)

0x8635bf08 : 0x214063 (0xf569400 0x150f1180 0xe76cf10 0xf569400)

0x8635bf48 : 0x21b25b (0xf569400 0x0 0x0 0x0)

0x8635bf98 : 0x2b7bb7 (0xfc8e814 0x1 0xfc8e844 0x8)

0x8635bfc8 : 0x2e60c7 (0xfc8e810 0x1 0x10 0xf285f50)

BSD process name corresponding to current thread: MagicanLite

Mac OS version:

11G63

Kernel version:

Darwin Kernel Version 11.4.2: Thu Aug 23 16:26:45 PDT 2012; root:xnu-1699.32.7~1/RELEASE_I386 Kernel UUID: 859B45FB-14BB-35ED-B823-08393C63E13B

System model name: MacPro2,1 (Mac-F4208DA9)

System uptime in nanoseconds: 3000060069680

last loaded kext at 126666742857: com.apple.filesystems.smbfs 1.7.2 (addr 0x1365000, size 249856)

last unloaded kext at 122756276723: com.apple.driver.PioneerSuperDrive 3.0.6 (addr 0x19ed000, size 12288)

loaded kexts:

1. com.apple.filesystems.smbfs 1.7.2
2. com.apple.filesystems.autofs 3.0
3. com.apple.driver.AppleHWSensor 1.9.5d0
4. com.apple.driver.AppleUpstreamUserClient 3.5.9
5. com.apple.driver.AppleHDA 2.2.5a5
6. com.apple.driver.AppleMCCSControl 1.0.33
7. com.apple.driver.AudioAUUC 1.59
8. com.apple.kext.ATIFramebuffer 7.3.2
9. com.apple.driver.AppleUSBDisplays 323.3
10. com.apple.iokit.IOUserEthernet 1.0.0d1
11. com.apple.iokit.IOBluetoothSerialManager 4.0.8f17
12. com.apple.Dont_Steal_Mac_OS_X 7.0.0
13. com.apple.driver.AppleMCEDriver 1.1.9
14. com.apple.driver.AudioIPCDriver 1.2.3
15. com.apple.driver.ApplePolicyControl 3.1.33
16. com.apple.driver.ACPI_SMC_PlatformPlugin 5.0.0d8
17. com.apple.ATIRadeonX1000 7.0.4
18. com.apple.driver.AppleLPC 1.6.0
19. com.apple.iokit.SCSITaskUserClient 3.2.1
20. com.apple.driver.XsanFilter 404
21. com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
22. com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
23. com.apple.BootCache 33
24. com.apple.iokit.IOAHCIBlockStorage 2.1.0
25. com.apple.driver.AppleFWOHCI 4.9.0
26. com.apple.driver.AppleAHCIPort 2.3.1
27. com.apple.driver.AppleIntelPIIXATA 2.5.1
28. com.apple.driver.AirPortBrcm43224 501.36.15
29. com.apple.driver.AppleUSBHub 5.1.0
30. com.apple.driver.AppleIntel8254XEthernet 2.1.3b1
31. com.apple.driver.AppleUSBEHCI 5.1.0
32. com.apple.driver.AppleEFINVRAM 1.6.1
33. com.apple.driver.AppleUSBUHCI 5.1.0
34. com.apple.driver.AppleACPIButtons 1.5
35. com.apple.driver.AppleRTC 1.5
36. com.apple.driver.AppleHPET 1.7
37. com.apple.driver.AppleSMBIOS 1.9
38. com.apple.driver.AppleACPIEC 1.5
39. com.apple.driver.AppleAPIC 1.6
40. com.apple.driver.AppleIntelCPUPowerManagementClient 195.0.0
41. com.apple.nke.applicationfirewall 3.2.30
42. com.apple.security.quarantine 1.4
43. com.apple.security.TMSafetyNet 8
44. com.apple.driver.AppleIntelCPUPowerManagement 195.0.0
45. com.apple.kext.triggers 1.0
46. com.apple.driver.DspFuncLib 2.2.5a5
47. com.apple.driver.AppleSMBusController 1.0.10d0
48. com.apple.iokit.IOFireWireIP 2.2.5
49. com.apple.iokit.IOSurface 80.0.2
50. com.apple.iokit.IOSerialFamily 10.0.5
51. com.apple.driver.AppleHDAController 2.2.5a5
52. com.apple.iokit.IOHDAFamily 2.2.5a5
53. com.apple.iokit.IOAudioFamily 1.8.6fc18
54. com.apple.kext.OSvKernDSPLib 1.3
55. com.apple.driver.AppleGraphicsControl 3.1.33
56. com.apple.driver.AppleSMC 3.1.3d10
57. com.apple.driver.IOPlatformPluginLegacy 5.0.0d8
58. com.apple.iokit.IONDRVSupport 2.3.4
59. com.apple.driver.IOPlatformPluginFamily 5.1.1d6
60. com.apple.kext.ATI1900Controller 7.3.2
61. com.apple.kext.ATISupport 7.3.2
62. com.apple.iokit.IOGraphicsFamily 2.3.4
63. com.apple.driver.AppleUSBHIDKeyboard 160.7
64. com.apple.driver.AppleHIDKeyboard 160.7
65. com.apple.driver.AppleUSBHIDMouse 175.8
66. com.apple.iokit.IOUSBHIDDriver 5.0.0
67. com.apple.driver.AppleHIDMouse 175.8
68. com.apple.driver.AppleUSBMergeNub 5.1.0
69. com.apple.iokit.IOSCSIBlockCommandsDevice 3.2.1
70. com.apple.iokit.IOUSBMassStorageClass 3.0.3
71. com.apple.driver.AppleUSBComposite 5.0.0
72. com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.2.1
73. com.apple.iokit.IOBDStorageFamily 1.7
74. com.apple.iokit.IODVDStorageFamily 1.7.1
75. com.apple.iokit.IOCDStorageFamily 1.7.1
76. com.apple.iokit.IOATAPIProtocolTransport 3.0.0
77. com.apple.iokit.IOSCSIArchitectureModelFamily 3.2.1
78. com.apple.iokit.IOFireWireFamily 4.4.8
79. com.apple.iokit.IOAHCIFamily 2.0.8
80. com.apple.iokit.IOATAFamily 2.5.1
81. com.apple.iokit.IO80211Family 420.3
82. com.apple.iokit.IONetworkingFamily 2.1
83. com.apple.iokit.IOUSBUserClient 5.0.0
84. com.apple.iokit.IOUSBFamily 5.1.0
85. com.apple.driver.AppleEFIRuntime 1.6.1
86. com.apple.iokit.IOHIDFamily 1.7.1
87. com.apple.iokit.IOSMBusFamily 1.1
88. com.apple.security.sandbox 177.8
89. com.apple.kext.AppleMatch 1.0.0d1
90. com.apple.driver.DiskImages 331.7
91. com.apple.iokit.IOStorageFamily 1.7.2
92. com.apple.driver.AppleKeyStore 28.18
93. com.apple.driver.AppleACPIPlatform 1.5
94. com.apple.iokit.IOPCIFamily 2.7
95. com.apple.iokit.IOACPIFamily 1.4

Model: MacPro2,1, BootROM MP21.007F.B06, 8 processors, Quad-Core Intel Xeon, 3 GHz, 10 GB, SMC 1.15f3

Graphics: ATI Radeon X1900 XT, ATY,RadeonX1900, PCIe, 512 MB Memory Module: DIMM Riser A/DIMM 1, 2 GB, DDR2 FB-DIMM, 667 MHz, 0x80CE, 0x4D3339355435373530435A342D4345363120

Memory Module: DIMM Riser A/DIMM 2, 2 GB, DDR2 FB-DIMM, 667 MHz, 0x80CE, 0x4D3339355435373530435A342D4345363120

Memory Module: DIMM Riser B/DIMM 1, 2 GB, DDR2 FB-DIMM, 667 MHz, 0x80CE, 0x4D3339355435373530435A342D4345363120

Memory Module: DIMM Riser B/DIMM 2, 2 GB, DDR2 FB-DIMM, 667 MHz, 0x80CE, 0x4D3339355435373530435A342D4345363120

Memory Module: DIMM Riser B/DIMM 3, 1 GB, DDR2 FB-DIMM, 667 MHz, 0x0562, 0x000000000000000000000000000000000000

Memory Module: DIMM Riser B/DIMM 4, 1 GB, DDR2 FB-DIMM, 667 MHz, 0x0562, 0x000000000000000000000000000000000000

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x87), Broadcom BCM43xx 1.0 (5.10.131.36.15) Network Service: Ethernet 1, Ethernet, en0 PCI Card: ATY,RadeonX1900, sppci_displaycontroller, Slot-1 Serial ATA Device: SAMSUNG HD501LJ, 500.11 GB Serial ATA Device: ST1000DM003-9YN162, 1 TB Serial ATA Device: OWC Mercury Electra 3G SSD, 120.03 GB Parallel ATA Device: PIONEER DVD-RW DVR-112D USB Device: hub_device, apple_vendor_id, 0x911b, 0xfd500000 / 4 USB Device: Apple Optical USB Mouse, apple_vendor_id, 0x0304, 0xfd530000 / 9 USB Device: Keyboard Hub, apple_vendor_id, 0x1006, 0xfd510000 / 8 USB Device: Apple Keyboard, apple_vendor_id, 0x0221, 0xfd512000 / 10 USB Device: Apple Cinema Display, apple_vendor_id, 0x921b, 0xfd520000 / 7 USB Device: P'9221 Mobile Drive, 0x059f (LaCie), 0x1058, 0xfd200000 / 3 USB Device: hub_device, apple_vendor_id, 0x911c, 0xfd300000 / 2 USB Device: CTE-440-U V4.0-3, 0x056a (WACOM Co., Ltd.), 0x0015, 0xfd310000 / 6 USB Device: Apple Cinema HD Display, apple_vendor_id, 0x921c, 0xfd320000 / 5 FireWire Device: built-in_hub, 800mbit_speed FireWire Device: unknown_device, unknown_speed