Disk error that I can't repair despite logical steps

1. I ran Disk Utility within OSX and detected a disk error but the option to repair was grayed out
2. I ran my back up system to ensure I have an up-to-date clone on my LaCie external HD
3. I booted Norton Utilities from CD which couldn't repair the error
4. I ran Apple Hardware Extended test which said there were no hardware problems
5. I began wondering if it was a software issue rather than a hardware one...
6. I booted Disk Utility from my Tiger Install DVD which also detected a disk error but could not fix it
7. Thinking that reinstalling Tiger might do the trick, I tried to 'Archive and Install' Mac OS X Tiger from the DVD twice, but each time it was unable to complete the install and asked me to start over again
Any ideas how to fix this error?
I am working quite intensively with iMovie at the moment, which crawls on my 3 year old 1 GHz PowerBook. One file has grown to a whopping 18 GB in size. Could this be part of the problem? I performed permissions repair, disk verification and defrag successfully last week before starting on my iMovie project, so the system was pretty well optimised, I thought.

Thanks, Miriam. I regularly run Utilities to ensure my system stays in good condition. Especially as I work with images a lot and sometimes - like now - with video. So, it was routine maintenance I guess. However, some applications have been a little slow to open or struggled to open files recently as well.
Regarding Disk Warrior etc, being an individual rather than a corporate user, obviously I'd rather avoid spending the money unless I absolutely have to. In addition, being in UK, it may take time for the disk to arrive and I don't think my nearest Apple Store stocks Disk Warrior - it's not on the UK online store anyhow (strangely). TechTool Pro is more expensive still. Sorry if I sound stingy, I just am being careful with my money. If I need to buy Disk Warrior, of course I will.
Thanks, A Brody, for the welcome. I regularly clone my entire system so I have a bootable backup, but thanks for the reminder anyway!
I appreciate the comments from both of you about Norton in this regard.
Since the Apple Hardware Extended test indicated no hardware faults, am I right to think it is probably more to do with software? Or should I be concerned about my hard disk or other hardware?
PowerBook G4 Mac OS X (10.4.5) 1 GHz PowerPC G4 | 1 MB L3 cache | 768 MB DDR SDRAM

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papayaman wrote:
Does my hard drive need to be replaced?
Sure sounds like it.
Am I on borrowed time?
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5/9/12 12:59:12.000 PM kernel: add_fsevent: unable to get path for vp 0xdc8eafc (tmp.live.6.cmpt..mds.101.96.compactPayloads2.idx; ret 22; type 4)
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5/9/12 12:59:12.000 PM kernel: add_fsevent: unable to get path for vp 0xdd47158 (tmp.live.6.cmpt..mds.101.95.compactPayloads1.idx; ret 22; type 4)
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5/9/12 12:59:12.000 PM kernel: add_fsevent: unable to get path for vp 0x173da534 (tmp.live.6.cmpt..mds.101.97.compactPayloads1.idx; ret 22; type 4)
5/9/12 12:59:12.000 PM kernel: add_fsevent: unabled to get a path for vp 0x173da534. dropping the event.
5/9/12 12:59:12.000 PM kernel: add_fsevent: unable to get path for vp 0xbeabd7c (tmp.live.6.cmpt..mds.101.98.compactPayloads2.idx; ret 22; type 4)
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Melissa,
Yes, I now see the WAB area. Because of the horizontal tightness of the screen cap, I missed this.
I do not have any experience with the RADEON X600, but maybe someone else knows it. My first thought would be a display driver issue with the video card. You can find out what drivers you have by following the links below. Just substitute Display Adapters for Human Interface Devices. You might go to the ATI site and see if they offer a newer driver for your video card. These get out of date in a hurry.
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2.) From the My Computer setting, search for Intelli* in Files & Folders. This will find all instances of the IntelliPoint driver. If you have it installed, then go back and do #1 above to check to see if it is in use.
Now, all of the GUI display problems I've read of in a myriad of Adobe programs have been different, than yours. That idea is but a shot in the dark. Now, with Adobe and display issues, I normally think of Intellipoint mouse drivers. You might try changing drivers to the stock MS Windows\System32 drivers and see what happens. You might loose a touch of functionality of a multi-button/tilt-wheel mouse, if you have one, but it *might* take care of GUI issues.
I've been hoping that someone else would chime in with "hey, that's just the xxx, don't you recognize it?" So far, no one has.
Hunt

Disk error that I can't repair despite logical steps

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