Application freezing and StartUp issues

My PB Titanium, 15", 550 Mhz freezes randomly: when it happens I can only force the Shut Down; afterwards the computer won't startup: I can see the gray screen with the spinning gear and that's all.
I erased the disk and re installed the System (OS X 10.3.9), but now I have the same problems.
I run the apple hardware test and the HW seems to be ok.
Disk Utilities found that the disk is OK. Tech Tool Pro 4.0.4 e-drive found two bad blocks. Otherwise, mounting the volume as external Firewire disk, the bad blocks were not found by Tech Tool Pro.
I have already tried the PRAM and PMU reset.
I don't know what else I can do....

Hi vivi,
Given that your PB boots fine to these others disks, it's quite possible you have a software issue.
Have you run Background Maintenance?
Also, how much free space do you have available on your HD? If it's anything under 4GB, this may be causing your issues.
Have you repaired permissions while booted normally from your HD? (not from the install disk)
the Power Button zone become very very hot after a while, and the fan is often spinning.
That's where your power adapter plugs in. Later model TiBooks actually added another fan there to cool things down more, but prior to the 800MHz, none of the TiBooks have this second fan.
Do you think that this is the problem?
It's normal for this area to become warm while the power adapter is plugged in, especially when it's charging the batt. However, if it's suddenly getting much warmer than it ever did before, then something must have changed.
What is the condition of your battery/how long will your PB run from the batt?
How can I know if the cooling system is working correctly?
Your PB has one fan, for the CPU, centered at the rear. There is no test for it, but when you run CPU intensive applications, it should run after awhile. Try opening iTunes and running Visualizer (turn it on from the Visualizer menu) for 10 minutes or more. This makes my CPU fan kick in every time. If you can't hear the fan due to other background noise, hold a flimsy piece of paper by the vent in the rear of your PB and see if air is being pushed out by the fan.
One other thing you may want to try is to quit all apps and open Activity Monitor (Applications>Utilities) and see if any processes are using a significant amount of your CPU which is causing things to heat up.

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Russell Pond wrote:
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Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software – potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions – they’re easy to carry out and won’t change anything on your Mac.
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Below are several lines of text in monospaced type, which are UNIX shell commands. They’re harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of running these commands, search this site for other discussions in which they’ve been used without any report of ill effects.
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This is a strange one, and I've not been using Macs properly for very long, so bear with me
It only happens when I use cmdshift3 to take a full screenshot, the other shortcuts for taking them are fine, I do get a similar issue when using Grab and it, too, only occurs on the full screen capture. What happens is, the sound clip of the camera noise will begin to play, stop, it goes a little distorted then the windows on screen will freeze up, the mouse will still move, and it stays like that for around 5 seconds until the file is saved to the desktop and all goes back to normal again. I'd like to reiterate that it only does this when i do a full screenshot, and the smaller one with the crosshairs and the individual windows is perfectly fine.
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Sep 24 14:04:09 xxxxxxxx-computer kernel[0]: IOAudioStream[0x4db4a00]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (2,728)->(3,7bd).
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Sep 24 14:04:32 xxxxxxxx-computer kernel[0]: IOAudioStream[0x4db4a00]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (2,71a)->(3,7ec).
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Sep 24 14:04:33 xxxxxxxx-computer kernel[0]: IOAudioStream[0x4db4a00]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (4,73a)->(5,7c8).
Sep 24 14:04:33 xxxxxxxx-computer kernel[0]: IOAudioStream[0x4db4a00]::clipIfNecessary() - adjusting clipped position to (5,73a)
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Thanks,
Claire

Bingo! EXACT same problem here! It seems to me its a software bug.. ??

Application freezing and StartUp issues

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