My Mac Mini keeps rebooting itself automatically after I've shut it down!

Hi All,
Something that has been going on for a few months now is that when I go to close down my Mac Mini, it goes to the white screen, then goes black, and then suddenly reboots, and comes up with something like "Your computer is rebooting because of a problem"....I am running Mountain Lion (latest version).
I can avoid this happening 9 times out of 10 if I go into Disk Utility and do a 'repair permissions', but surely this is WRONG.
I have my Mini plugged into an Apple LED Cinema Display, so problems with HDMI as I've read in other threads.
Anybody else experiencing this problem and anybody resolved it?
Thanks
P

Interval Since Last Panic Report: 81 sec
Panics Since Last Report:          1
Anonymous UUID:                    xxxxx
Fri Mar 15 20:17:52 2013
panic(cpu 4 caller 0xffffff80272b7e75): Kernel trap at 0xffffff802730ec54, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x00000000000000e0, CR3: 0x000000002790b001, CR4: 0x00000000001606e0
RAX: 0xffffff8047fab808, RBX: 0x0000000000000000, RCX: 0x0000000000000000, RDX: 0x0000000000000002
RSP: 0xffffff8253cb3b20, RBP: 0xffffff8253cb3b20, RSI: 0x0000000000000001, RDI: 0x0000000000000000
R8: 0xffffff80276e601c, R9: 0xffffff8029ee6e90, R10: 0xffffff81f7f2f000, R11: 0x00000000ffffff00
R12: 0x0000000000000000, R13: 0xffffff80481ae1f0, R14: 0xffffff8047fab808, R15: 0x0000000000000002
RFL: 0x0000000000010246, RIP: 0xffffff802730ec54, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x00000000000000e0, Error code: 0x0000000000000000, Fault CPU: 0x4
Backtrace (CPU 4), Frame : Return Address
0xffffff8253cb37c0 : 0xffffff802721d626
0xffffff8253cb3830 : 0xffffff80272b7e75
0xffffff8253cb3a00 : 0xffffff80272cd3bd
0xffffff8253cb3a20 : 0xffffff802730ec54
0xffffff8253cb3b20 : 0xffffff802750f022
0xffffff8253cb3b60 : 0xffffff80275145a1
0xffffff8253cb3b90 : 0xffffff80275144e8
0xffffff8253cb3c00 : 0xffffff80275178cc
0xffffff8253cb3c30 : 0xffffff8027310f7f
0xffffff8253cb3c60 : 0xffffff80272f07a3
0xffffff8253cb3cb0 : 0xffffff80272efef1
0xffffff8253cb3cf0 : 0xffffff80272f03ea
0xffffff8253cb3d70 : 0xffffff8027504bca
0xffffff8253cb3dd0 : 0xffffff80272f8ec2
0xffffff8253cb3e20 : 0xffffff80272f183a
0xffffff8253cb3e60 : 0xffffff8027563ece
0xffffff8253cb3ed0 : 0xffffff8027570932
0xffffff8253cb3f50 : 0xffffff80275e060a
0xffffff8253cb3fb0 : 0xffffff80272cdc03
BSD process name corresponding to current thread: launchd
Mac OS version:
12C3103
Kernel version:
Darwin Kernel Version 12.2.1: Thu Oct 18 12:13:47 PDT 2012; root:xnu-2050.20.9~1/RELEASE_X86_64
Kernel UUID: 3F93B852-872F-3DF0-BCF8-46D48024C422
Kernel slide:     0x0000000027000000
Kernel text base: 0xffffff8027200000
System model name: Macmini6,2 (Mac-F65AE981FFA204ED)
System uptime in nanoseconds: 5184560753542
last loaded kext at 307181025401: com.apple.filesystems.msdosfs          1.8 (addr 0xffffff7fa902c000, size 65536)
last unloaded kext at 527569875142: com.apple.filesystems.msdosfs          1.8 (addr 0xffffff7fa902c000, size 57344)
loaded kexts:
com.parallels.kext.prl_vnic          7.0 15104.778994
com.parallels.kext.prl_netbridge          7.0 15104.778994
com.parallels.kext.prl_hid_hook          7.0 15104.778994
com.parallels.kext.prl_hypervisor          7.0 15104.778994
com.parallels.kext.prl_usb_connect          7.0 15104.778994
com.vmware.kext.vmnet          3.0.0
com.vmware.kext.vmioplug          3.0.0
com.vmware.kext.vmci          3.0.0
com.vmware.kext.vmx86          3.0.0
com.avatron.AVExFramebuffer          1.7
com.hzsystems.terminus.driver          4
com.globaldelight.driver.BoomDevice          1.1
com.avatron.AVExVideo          1.7
com.attotech.driver.ATTOiSCSI          3.4.1b1
com.apple.driver.AppleBluetoothMultitouch          75.19
com.apple.iokit.IOBluetoothSerialManager          4.1.2f9
com.apple.driver.AppleMikeyHIDDriver          122
com.apple.driver.AGPM          100.12.81
com.apple.driver.ApplePlatformEnabler          2.0.6d1
com.apple.driver.X86PlatformShim          1.0.0
com.apple.driver.AppleHDA          2.3.5fc12
com.apple.driver.AppleUSBDisplays          357
com.apple.driver.AudioAUUC          1.60
com.apple.filesystems.autofs          3.0
com.apple.iokit.IOUserEthernet          1.0.0d1
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.AppleMikeyDriver          2.3.5fc12
com.apple.driver.AppleSMCPDRC          1.0.0
com.apple.driver.AppleLPC          1.6.0
com.apple.driver.ApplePolicyControl          3.2.13
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport          4.1.2f9
com.apple.driver.AppleUpstreamUserClient          3.5.10
com.apple.driver.AppleMCCSControl          1.1.11
com.apple.driver.AppleIntelHD4000Graphics          8.0.6
com.apple.driver.AppleIntelFramebufferCapri          8.0.6
com.apple.driver.AppleIRController          320.15
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.BootCache          34
com.apple.driver.XsanFilter          404
com.apple.iokit.IOAHCIBlockStorage          2.3.1
com.apple.driver.AppleUSBHub          5.5.0
com.apple.driver.AppleSDXC          1.4.0
com.apple.iokit.AppleBCM5701Ethernet          3.5.0b9
com.apple.driver.AirPort.Brcm4331          612.20.15
com.apple.driver.AppleFWOHCI          4.9.6
com.apple.driver.AppleAHCIPort          2.5.1
com.apple.driver.AppleUSBEHCI          5.5.0
com.apple.driver.AppleUSBXHCI          1.5.1
com.apple.driver.AppleEFINVRAM          1.7
com.apple.driver.AppleACPIButtons          1.7
com.apple.driver.AppleRTC          1.5
com.apple.driver.AppleHPET          1.8
com.apple.driver.AppleSMBIOS          1.9
com.apple.driver.AppleACPIEC          1.7
com.apple.driver.AppleAPIC          1.6
com.apple.driver.AppleIntelCPUPowerManagementClient          196.0.0
com.apple.nke.applicationfirewall          4.0.39
com.apple.security.quarantine          2
com.apple.driver.AppleIntelCPUPowerManagement          196.0.0
com.apple.driver.AppleBluetoothHIDKeyboard          170.2
com.apple.driver.AppleHIDKeyboard          170.2
com.apple.driver.IOBluetoothHIDDriver          4.1.2f9
com.apple.driver.AppleMultitouchDriver          235.29
com.apple.iokit.IOSerialFamily          10.0.6
com.apple.driver.DspFuncLib          2.3.5fc12
com.apple.kext.triggers          1.0
com.apple.iokit.IOSurface          86.0.3
com.apple.iokit.IOBluetoothFamily          4.1.2f9
com.apple.driver.AppleHDAController          2.3.5fc12
com.apple.iokit.IOHDAFamily          2.3.5fc12
com.apple.iokit.IOFireWireIP          2.2.5
com.apple.driver.AppleSMBusPCI          1.0.11d0
com.apple.driver.X86PlatformPlugin          1.0.0
com.apple.driver.AppleSMC          3.1.4d2
com.apple.driver.IOPlatformPluginFamily          5.3.0d47
com.apple.driver.AppleGraphicsControl          3.2.13
com.apple.driver.AppleUSBAudio          2.9.0f6
com.apple.iokit.IOAudioFamily          1.8.9fc11
com.apple.kext.OSvKernDSPLib          1.6
com.apple.iokit.AppleBluetoothHCIControllerUSBTransport          4.1.2f9
com.apple.driver.AppleSMBusController          1.0.11d0
com.apple.iokit.IONDRVSupport          2.3.6
com.apple.iokit.IOGraphicsFamily          2.3.6
com.apple.iokit.IOSCSIArchitectureModelFamily          3.5.5
com.apple.driver.AppleUSBMergeNub          5.5.0
com.apple.iokit.IOUSBHIDDriver          5.2.5
com.apple.driver.AppleThunderboltDPInAdapter          1.8.9
com.apple.driver.AppleThunderboltDPAdapterFamily          1.8.9
com.apple.driver.AppleThunderboltPCIDownAdapter          1.2.6
com.apple.driver.AppleUSBComposite          5.2.5
com.apple.driver.AppleThunderboltNHI          1.6.3
com.apple.iokit.IOThunderboltFamily          2.1.8
com.apple.iokit.IOEthernetAVBController          1.0.2b1
com.apple.iokit.IOUSBUserClient          5.5.0
com.apple.iokit.IO80211Family          510.4
com.apple.iokit.IONetworkingFamily          3.0
com.apple.iokit.IOFireWireFamily          4.5.5
com.apple.iokit.IOAHCIFamily          2.3.1
com.apple.iokit.IOUSBFamily          5.5.0
com.apple.iokit.IOHIDFamily          1.8.1
com.apple.driver.AppleEFIRuntime          1.7
com.apple.iokit.IOSMBusFamily          1.1
com.apple.security.sandbox          220
com.apple.kext.AppleMatch          1.0.0d1
com.apple.security.TMSafetyNet          7
com.apple.driver.DiskImages          344
com.apple.iokit.IOStorageFamily          1.8
com.apple.driver.AppleKeyStore          28.21
com.apple.driver.AppleACPIPlatform          1.7
com.apple.iokit.IOPCIFamily          2.7.3
com.apple.iokit.IOACPIFamily          1.4
com.apple.kec.corecrypto          1.0
Model: Macmini6,2, BootROM MM61.0106.B03, 4 processors, Intel Core i7, 2.6 GHz, 16 GB, SMC 2.8f0
Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In, 768 MB
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x80AD, 0x484D5434314753364D465238432D50422020
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x80AD, 0x484D5434314753364D465238432D50422020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x10E), Broadcom BCM43xx 1.0 (5.106.98.100.16)
Bluetooth: Version 4.1.3f3 11349, 2 service, 18 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: APPLE HDD ST1000LM024, 1 TB
Serial ATA Device: APPLE HDD ST1000LM024, 1 TB
USB Device: hub_device, 0x8087 (Intel Corporation), 0x0024, 0x1a100000 / 2
USB Device: hub_device, 0x8087 (Intel Corporation), 0x0024, 0x1d100000 / 2
USB Device: hub_device, apple_vendor_id, 0x9136, 0x1d110000 / 6
USB Device: hub_device, apple_vendor_id, 0x9137, 0x1d114000 / 10
USB Device: Display iSight, apple_vendor_id, 0x8508, 0x1d114200 / 13
USB Device: Display Audio, apple_vendor_id, 0x2912, 0x1d114100 / 12
USB Device: Apple LED Cinema Display, apple_vendor_id, 0x9236, 0x1d114300 / 11
USB Device: hub_device, 0x0424 (SMSC), 0x2512, 0x1d180000 / 3
USB Device: BRCM20702 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x1d181000 / 5
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x828a, 0x1d181300 / 8
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x1d182000 / 4

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