Partition table corrupted after installing OSX10.8.3

I installed OSX 10.8.3 from the Mac App Store on Friday and after installing, my macbook rebooted and a grey bar appeared at the bottom of the screen like it was updating the EFI...
After waiting the bar to be full (apprx 45 minutes), it simply stopped...
I tried restarting and the bar reappeared... So I decided to reboot in Verbose and saw my disk being repaired once, twice, 3 times and then nothing more...
I then booted on my one week old clone on an external disk (thank god I had one) and checked the internal disk with the following :
Disk util (GUI)
Disk util (Terminal)
Testdisk and pdisk
Data Rescue 3
Everything seems ok with reading the information on the disk, but impossible to mount/unmount the OS X partition
But the partition table is not right...
I need to be able to use my computer so I might erase and reinstall everything today,
But if someone has an explanation to this mess I want to know it...
Macbook Pro early 2011
2.7GHz Intel i7
RAM 8Go

I tried burning the firmware updater to disc, but I when I try to boot from it, it says "No bootable device — insert boot disk and press any key.” This is with a an external firewire dvd burner. But I also tried the same disc with another MBP that still has its original internal superdrive, and I got the same error there. That MBP can boot from the Crucial SSD firmware disc though, so I don't know what the deal is.
I'd gotten rid of my bootcamp partition a good while ago since VMWare had been taking care of any Windows needs I had just fine, but I still had a Winclone backup of my old bootcamp partition. So I restored it to a new partition, booted into Windows 7, and installed the Intel SSD Toolkit. But every time I tried to run it, it just crashed on me. I watched it in the task manager, and it would appear in the process list for a while and then just disappear.
I've already ordered a bigger Crucial M4 to replace the X-25M (it was getting a bit full anyway), so I hope things go better with it. Thanks for trying to help though, everybody.

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    00000040  f6 00 00 00 01 00 00 00  e0 4f 34 ba 5b 34 ba c0  |.........O4.[4..|
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    00000060  1f 1e 68 66 00 cb 88 16  0e 00 66 81 3e 03 00 4e  |..hf......f.>..N|
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    000000a0  9f 83 c4 18 9e 58 1f 72  e1 3b 06 0b 00 75 db a3  |.....X.r.;...u..|
    000000b0  0f 00 c1 2e 0f 00 04 1e  5a 33 db b9 00 20 2b c8  |........Z3... +.|
    000000c0  66 ff 06 11 00 03 16 0f  00 8e c2 ff 06 16 00 e8  |f...............|
    000000d0  4b 00 2b c8 77 ef b8 00  bb cd 1a 66 23 c0 75 2d  |K.+.w......f#.u-|
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    00000130  00 66 50 06 53 68 01 00  68 10 00 b4 42 8a 16 0e  |.fP.Sh..h...B...|
    00000140  00 16 1f 8b f4 cd 13 66  59 5b 5a 66 59 66 59 1f  |.......fY[ZfYfY.|
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    000001b0  47 52 20 69 73 20 6d 69  73 73 69 6e 67 00 0d 0a  |GR is missing...|
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    000001e0  72 6c 2b 41 6c 74 2b 44  65 6c 20 74 6f 20 72 65  |rl+Alt+Del to re|
    000001f0  73 74 61 72 74 0d 0a 00  8c a9 be d6 00 00 55 aa  |start.........U.|
    00000200
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