MacBook hangs while "Updating Boot Caches"

Hi there,
sometimes when I'm turning my MacBook off, the following message appears:
Updating Boot Caches
Caches needed for booting are being updated
And another line saying something like "as soon as the caches are updated system will be turned off"
The problem is that, even after some minutes, nothing happens, the message is still there and I'm forced to turn the MacBook off by holding the power button...
Any idea about the meaning of the message and the reason of the hanging?
Thanks in advance and Ciao!
Sergio

Hey Sergio, have you gotten any answers why your Macbook hangs up often? I've got a two-week old black Macbook and it hangs up more often than I expect.

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Updating Boot Caches

Hi,
I just upgraded to Leopard from Tiger last night on my 15" Macbook Pro (2.16ghz). I also did a software update after the installation. Ever since, whenever I restart or shut down, I receive a message saying "Updating Boot Caches" "Caches necessary for booting are being updated". It eventually goes away and the machine shuts down or re-starts (actually, I shut down this morning, prior to coming to work and found the mbp hot with the fans running - meaning it didn't quite shut down when I closed the lid).
I don't expect this is normal. Has anyone else

Hi,
I just got off the phone with Apple support. They told me to go into my login items under my account in the system preferences and delete all but iCal and iTunesHelper. Then I was asked to look in my Macintosh HD/Library/StartupItems folder. I had a Parallels folder in there, so I was asked to move that to the desktop (it wouldn't move it, so I moved it to the Trash then moved it out of the Trash and onto the desktop). Then, I was asked to restart, which I did a couple of times and I haven't received the message again. It seems to have resolved it.
While I was on the phone, I asked them about the 'Warning: SUID file "System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAg ent" has been modified and will not be repaired.' warning I receive when I try to repair permissions. The product specialist he was chatting with said that I can ignore it and that they are looking into what's causing it.
Thanks,
Stephen

"Updating boot caches" message

I periodically get a "Updating boot caches" message when shutting down. I click "okay" and wait.
Nothing seems to happen - I left it in this state overnight in case some long process was involved - the following morning all I had was a desktop background with no icons, menus, taskbar or pointer. Had to hard re-boot.
Clearly something is wrong. Any suggestions?
Thanks!

Same thing happens to me after the 10.5.7 update and combo update. Also my clock no longer displays in the menu bar. I have to do a hard shut down every time.

Sir, i have apple macbook the old not it is neither pro nor air it is a simple one . it is running on mac 10.5.6 and i am not able to update it to 10.5.8 it hangs while updating so please help

sir i cant update my macbook to mac os x 10.5.8 . it hangs wile updating and i am looking for a better update . knidly reply thanks

Some general advice on updating Leopard:
It is worth noting that it is an extreme rarity for updates to cause upsets to your system, as they have all been extensively beta-tested, but they may well reveal pre-existing ones, particularly those of which you may have been unaware. If you are actually aware of any glitches, make sure they are fixed before proceeding further.
So before you do anything else:
If you can, make a full backup first to an external hard disk. Ideally you should always have a bootable clone of your system that enables you to revert to the previous pre-update state.
Turn off sleep mode for both screen and hard disk.
Disconnect all peripherals except your keyboard and mouse.
1. Repair Permissions (in Disk Utility)
2. Verify the state of your hard disk using Disk Utility. If any faults are reported, restart from your install disk (holding down the C key), go to Disk Utility, and repair your startup disk. Restart again to get back to your startup disk.
At least you can now be reasonably certain that your system does not contain any obvious faults that might cause an update/upgrade to fail.
3. Download the correct version of the COMBO update from the Apple download site.
The Combo updater of Leopard 10.5.8 can be found here:
http://support.apple.com/downloads/Mac_OS_X_10_5_8_Combo_Update
If you prefer to download updates via Software Update in the Apple menu (which would ensure that the correct version for your Mac was being downloaded), it is not recommended to allow SU to install major (or even minor) updates automatically. Set Software Update to just download the updater without immediately installing it. There is always the possibility that the combined download and install (which can be a lengthy process) might be interrupted by a power outage or your cat walking across the keyboard, and an interrupted install will almost certainly cause havoc. Once it is downloaded, you can install at a time that suits you. You should make a backup copy of the updater on a CD in case you ever need a reinstall.
Full details about the 10.5.8 update here: http://support.apple.com/kb/HT3606
More information on using Software Updater here:
http://support.apple.com/kb/TA24901?viewlocale=en_US
Using the Combo updater ensures that all system files changed since the original 10.5.0 are included, and any that may have been missed out or subsequently damaged will be repaired. The Delta updater, although a temptingly smaller download, only takes you from the previous version to the new one, i.e. for example from 10.5.7 to 10.5.8. Software Update will generally download the Delta updater only. The preferable Combo updater needs to be downloaded from Apple's download site.
Now proceed as follows:
4. Close all applications and turn off energy saving and screensaver.
5. Unplug all peripherals except your keyboard and mouse.
6. Install the update/upgrade. Do not under any circumstances interrupt this procedure. Do not do anything else on your computer while it is installing. Be patient.
7. When it ask for a restart to complete the installation, click restart. This can take longer than normal, there are probably thousands of files to overwrite and place in the correct location. Do nothing while this is going on.
8. Once your Mac is awake, repair permissions again, and you should be good to go!
If your Mac seems slightly sluggish or ‘different’, perform a second restart. It can’t hurt and is sometimes efficacious! In fact a second restart can be recommended.
9. Open a few of your most used applications and check that all is OK. In this connection please remember that not all manufacturers of third party applications and plug-ins, add-ons, haxies etc, will have had time to do any necessary rewrites to their software to make them compliant with the latest version of your operating system. Give them a week or two while you regularly check their websites for updates.
N.B. Do not attempt to install two different updates at the same time as each may have different routines and requirements. Follow the above recommendations for each update in turn.
Lastly, Apple's own article on the subject of Software Update may also be useful reading:
http://docs.info.apple.com/article.html?artnum=106695
[b]If you are updating Safari (or just have):[/b]
Input Managers from third parties can do as much harm as good. They use a security loophole to reach right into your applications' code and change that code as the application starts up. If you have installed an OS update and Safari is crashing, the very [i]first[/i] thing to do is clear out your InputManagers folders (both in your own Library and in the top-level /Library), log out and log back in, and try again.
So, disable all third party add-ons before updating Safari, as they may not have been updated yet for the new version. Add them back one by one. If something goes awry, remove it again and check on the software manufacturer's website for news of an update to match your version of Safari.
Most errors reported here after an update are due to an unrepaired or undetected inherent fault in the system, and/or a third party add-on.
Additional tips on software installation here:
http://docs.info.apple.com/article.html?artnum=106692
To reiterate, Input Managers reach right into an application and alter its code. This puts the behavior of the affected application outside the control and responsibility of its developers: a recipe for problems. That's not to say that issues absolutely will ensue as a result of Input Managers, but you, as a user, must decide. If the functionality of a specific Input Manager or set thereof is really important to you, you may well choose to assume the associated risk.
Again, the advice is to remove all Input Managers from the following directories:
/Library/InputManagers
~/Library/InputManagers
especially prior to system updates (they can always be added back one-by-one later).
Solutions for troubleshooting installation, startup, and login issues in Mac OS X v10.5
http://support.apple.com/kb/TS1541?viewlocale=en_US

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I searched this forum for simlar problems. I found:
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olliemilne wrote:
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MacBook hangs while "Updating Boot Caches"

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