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came across this problem on my hp dv6000.

 

http

://forums.macnn.com/90/mac-os-x/234768...using-100-cpu/

Symptoms

 

high cpu on 1 core ~ 100%

 

 

I am on 10.5.2 with all the updates (staying away from leopard graphics update)

 

 

I came across this solution here by Keith

http://macosx.com/tech-support/mac/osx-fin...usage/3776.html

 

 

"Repair Permissions using Disk Utility in your Utility folder.

"When done that, trash the Finder Preference - com.apple.finder.plist

 

located here;

 

user>library>preferences

 

Then run 'fsck";

 

To run fsck, you first need to start up your Mac in single-user mode. Here's how:

 

1. Restart your Mac.

 

2. Immediately press and hold the Command and "S" keys.

 

You'll see a bunch of text begin scrolling on your screen. In a few more seconds, you'll see the Unix command line prompt (#).

 

You're now in single-user mode.

 

Now that you're at the # prompt, here's how to run fsck:

( mount the disk / allow changes.

 

/sbin/fsck -fy

/sbin/mount -uw /

N.b don't forget the trailing backslash in above command)

1. Type: "fsck -f" (that's fsck-space-minus-f).

 

2. Press Return.

 

The fsck utility will blast some text onto your screen. If there's damage to your disk, you'll see a message that says:

 

***** FILE SYSTEM WAS MODIFIED *****

 

If you see this message--and this is extremely important-- repeat running fsck. It is normal to have to run fsck more than once -- the first run's repairs often uncover additional problems..

 

When fsck finally reports that no problems were found, and the # prompt reappears:

 

3. Type: "reboot" to restart,

 

or type "exit" to start up without rebooting.

 

4. Press Return.

 

Your Mac should proceed to start up normally to the login window or the Finder."

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