Invalid Node Structure errors keep coming back,

Hi people!
about 2 weeks I upgraded my internal HDD on my Mac Book 13" Unibody to a Western Digital Scorpion Blue 640gb... no big deal doing so. I booted up with the OX S 10.6 DVD and partitioned the drive into two and formatted each. I then installed OS X 10.6, then ran the software update. After every thing was complete I plugged in my USB 1TB drive and used Time Machine to create a backup.
After about a week of normal use I woke up one day to have my Mac Book take nearly 10min to boot, and when it did it was barely moving. I booted with the OS X DVD and ran Disk Utility and in reported Invalid Node Structure and I could not repair it. But the errors were only on the partition with OS X on it.
As I didn't have any files on that partition that I needed I did a Restore from Time Machine Backup that was on my USB drive. And all was good again. However this has happen about 3 times in the last 4-5 days. Each time I restore from the Time Machine backup and all is fine.
I thought I had it pinned down to a particular open source app that I was using but I restored the drive again last night and did not use that app this time... and this morning I am getting signs that something is going astray again (slow boot up times and slow shut down times etc). I am going to boot to the DVD and run Disk Utility again... but I am wondering is this software or can this new HDD be a dude? I never had this problem with the factory 160Gb Fujitsu drive that the Mac Book came with - although I never did partition that drive.
Any thoughts?
Cheers,
Chris

Hi streamworksaudio;
After you do that if this happens again, I would be really suspicious that drive is on the way out. I would be religious about backups and start checking around for a replacement.
Allan

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Hello all,
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Took 3+ hours. Came up clean. I have not restored from TM yet. Did the SL updates ect.
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Hi All,
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disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
disk0s2: I/O error.
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Hmmm, yeah that could be the last option, but I can't format the disk right now, 'cause I've some extremely important (not-yet-backed-up) files in it
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iBackup
JaBack
Silver Keeper
MimMac
Retrospect
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SuperDuper!
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SyncTwoFolders
Synk Pro
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Hi All,
I need some information on how I might solve a problem. I ran my Disk Utility earlier today to verify the HD on my MacBook Pro because my computer just seemed a bit off. It froze the other night when I shut it down.
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Michelle,
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Hi streamworksaudio;
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Self-resolved:
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Install or Reinstall Lion/Mountain Lion from Scratch
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Hello.
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Reformat the hard drive.
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Install or Reinstall Lion/Mountain Lion from Scratch
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I have an error of invalid node structure

I have an error of invalid node structure. Can I save my data from my hard drive? Is it even fixable?

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I can't get rid of the message, n error occurred with the publication of album. It just keep coming back, and can't move around in IPhoto.

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First pic: shows "before"
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I have very important Data on this disk, so i cannot even erase it.
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Helloi
http://supportdb.alsoft.com:591/FMPro?-db=alsoftsupport&-lay=main&-sortfield=Dat e&-sortorder=descend&Keywords=node&Product=%22%22&-op=lte&Date=%2F%2F&-max=15&-f ormat=AlsoftSupport-qa.html&-script=counter&-token=177&-Skip=0&-find

Invalid Node Structure errors keep coming back,

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