Time Machine Preparing for ages

I know this has come up a lot, but there seem to be so many possibilities, I thought I'd post some data from Time Machine Buddy.
Basically it had all been working great, but seems to have gone AWOL recently. Its still saying preparing just now in my latest attempt. (To be fair, hasn't been that long), but I'd been getting some error messages about not being able to mount etc.
And that appears in the TMB report so far :
Starting standard backup
Mounted network destination using URL: afp://Iain%[email protected]/Time%20Capsule
Backup destination mounted at path: /Volumes/Time Capsule
Failed to mount disk image /Volumes/Time Capsule/Iain MacDonald’s MacBook Pro_002332b100e6.sparsebundle (DIHLDiskImageAttach returned: 60)
Waiting 60 seconds and trying again.
Failed to eject volume /Volumes/Time Capsule (FSVolumeRefNum: -101; status: -47; dissenting pid: 0)
Backup destination alias resolved to path: /Volumes/Time Capsule
Any clues as to what my next steps should be would be much appreciated.
Many thanks.
Message was edited by: Iain MacDonald1

I upgraded from Tiger to Leopard, which is why i believe i have had trouble.
What is 'A&I or E&I'?

Similar Messages

MY POSSIBLE FIX for Time Machine preparing for ages every hour

Like many others, i have had problems with Time Machines backups - ever since upgrading to 10.5.2. Every hour it would say 'preparing' for ages, and then, when it did finally backup, the data transfer was incredibly slow. Not to mention the amount of cpu usage it was using during the preparing status!
I have no idea if this is a FIX, or if i was just lucky, but Time Machine now works as it should, i.e. it backs-up seamlessly.
Anyway, this is what i did: booted from my Tiger disc (yes, even though i have Leopard) and went into its 'disc utility', from there i selected 'repair permissions'. Once the Tiger disc had completed repairing the permissions, i quit out of it and restarted my MacBook normally, i.e. not from the Tiger disc. When it had finished restarting, i went to disc utility and selected 'repair permissions'.
Ever since, TM has been just perfect. Coincidence? - i honestly do not know.
By the way, i don't know if repairing the permissions from within Leopard did anything or not, but this is the sequence i used. Plus also, it might be good to note that i had repaired permissions many a time, but with no success in fixing TM, but once doing it from the Tiger disc it fixed TM.
I hope it helps someone, because i know just how annoying it was when TM was not working correctly!

I upgraded from Tiger to Leopard, which is why i believe i have had trouble.
What is 'A&I or E&I'?

Time Machine preparing for over 19 hours ??

Is this exceptionally long? There has not been a backup of the laptop (to the Time Capsule) for about 3 months. I have installed the monitoring widget for time machine and this shows that it is doing the full scan - but come on surely nearly a day preparing is too much. I have the laptop connected directly to the time capsule via ethernet.
Piers

pierslofi wrote:
Is this exceptionally long?
Yes. It's clearly stuck.
There has not been a backup of the laptop (to the Time Capsule) for about 3 months.
After that long, TM will almost certainly do a full backup. So if your TC isn't considerably more than twice the size of the data it's backing-up, your best bet will be to erase it and let TM start fresh.
Also, try all the things in item #D2 of the Time Machine - Troubleshooting *User Tip* at the top of this forum.

Time Machine-"preparing for EVER/backup"

i read an earlier post, saying that after mac crashes, its likely TM wants to do an initial backup again, and something in Console..
I hadnt crashed, only change was hadnt backed up in 2 weeks while traveling...so after coming home, my Time Capsule and Time Machine went to back up, and 4 hours of "preparing back up", it never backed up..And i guess my question is, why is the response from TM to want to do its initial backup as opposed to just backing up to whatever is new or had changed. Does this mean, after a day or two of not connecting with TimeCapsule or whatever External Drive I choose, that this will happen? As for now, how long would you say is a normal time, for the "preparing" to...prepare, and start to backup? And if its doing its initial, isnt it wanting to do everything, so there will be duplicates?
thank you for any help!!!

JGcalifornia wrote:
i read an earlier post, saying that after mac crashes, its likely TM wants to do an initial backup again, and something in Console..
If that's what it said, it was wrong. After a crash, TM can't be sure where everything was when "the lights went out", so it will likely do a "deep traversal", examining every file and folder on your system to see what needs to be backed-up. It will send explanatory messages to your logs. This process takes quite a while, of course, and much more with a Time Capsule, but TM won't do a full backup just because of a crash.
I hadnt crashed, only change was hadnt backed up in 2 weeks while traveling...so after coming home, my Time Capsule and Time Machine went to back up, and 4 hours of "preparing back up", it never backed up..And i guess my question is, why is the response from TM to want to do its initial backup as opposed to just backing up to whatever is new or had changed. Does this mean, after a day or two of not connecting with TimeCapsule or whatever External Drive I choose, that this will happen? As for now, how long would you say is a normal time, for the "preparing" to...prepare, and start to backup? And if its doing its initial, isnt it wanting to do everything, so there will be duplicates?
You have about three questions there.
First, TM will do a full, complete backup after certain hardware repairs, a full restore, or going several days without a backup. Just how many days is unclear, but it seems to be a combination of days and the volume of changes: 10 days seems safe, 2 weeks may not be.
And yes, this is another full backup of everything on your system. So it will take a very long time and a lot of disk space. Depending on how much space is available, you may want to erase the disk and let TM start over.
You say TM "never backed up" after the lengthy "preparing" phase. Did the backup fail, or did you cancel it?
If it failed, we need to look at the messages in your logs. Download the +Time Machine Buddy+ widget from: http://www.apple.com/downloads/dashboard/status/timemachinebuddy.html. It shows the messages from your logs for one TM backup run at a time, in a small window. Navigate to the failed backup, then copy and post the messages here (be sure to get them all, as sometimes they overflow the small window).

Leopard applications all hang while Time Machine prepares for backup

I'm sure others have posted about this but I can't find a usable solution. I have the most recent version of Leopard, a 1TB external FireWire drive dedicated to Time Machine storage and about 400GB of backups on it. Every day at some point, Time Machine starts a backup, pauses while preparing, and the entire Mac grinds to a halt. New processes won't launch, open applications hang, Finder becomes unresponsive, menus and dock freeze in whatever position they were in at the point of launch, and I can't cancel the backup process.
The only solution is to turn off the backup drive while its running and wait for the Mac to wake up again (which it does in under a minute). I have no virus protection running. I have erased the drive and started fresh at least once to no avail.
Since I am effectively breaking a live connection every time I turn the drive off without unmounting it first (an obvious no-no), the data has great potential to be getting more and more screwed up. What can I do?

Message logs:
October 12, 2009, 1:43:25 AM
Volume at path /Volumes/Racer BU does not appear to be the correct backup volume for this computer. (Cookies do not match)
Backup failed with error: 18
October 12, 2009, 11:32:32 AM
Starting standard backup
Backing up to: /Volumes/Racer BU/Backups.backupdb
Event store UUIDs don't match for volume: Racer X
Node requires deep traversal:/ reason:kFSEDBEventFlagMustScanSubDirs|kFSEDBEventFlagReasonEventDBUntrustable|
No pre-backup thinning needed: 984.2 MB requested (including padding), 443.72 GB available
Copied 21948 files (368.1 MB) from volume Racer X.
No pre-backup thinning needed: 548.2 MB requested (including padding), 443.35 GB available
Copied 961 files (965 KB) from volume Racer X.
Starting post-backup thinning
Deleted backup /Volumes/Racer BU/Backups.backupdb/Eric’s Mac Pro/2009-10-10-215828: 443.35 GB now available
Deleted backup /Volumes/Racer BU/Backups.backupdb/Eric’s Mac Pro/2009-10-10-205855: 443.36 GB now available
Deleted backup /Volumes/Racer BU/Backups.backupdb/Eric’s Mac Pro/2009-10-10-195856: 443.40 GB now available
Deleted backup /Volumes/Racer BU/Backups.backupdb/Eric’s Mac Pro/2009-10-10-185908: 443.46 GB now available
Deleted backup /Volumes/Racer BU/Backups.backupdb/Eric’s Mac Pro/2009-10-10-175907: 443.51 GB now available
Post-back up thinning complete: 5 expired backups removed
Backup completed successfully.
October 12, 2009, 12:18:32 PM
Starting standard backup
Backing up to: /Volumes/Racer BU/Backups.backupdb
No pre-backup thinning needed: 954.4 MB requested (including padding), 443.51 GB available
Unable to rebuild path cache for source item. Partial source path:
Copied 16717 files (339.6 MB) from volume Racer X.
No pre-backup thinning needed: 569.5 MB requested (including padding), 443.17 GB available
Copied 634 files (18.7 MB) from volume Racer X.
Starting post-backup thinning
Deleted backup /Volumes/Racer BU/Backups.backupdb/Eric’s Mac Pro/2009-10-10-225832: 443.24 GB now available
Deleted backup /Volumes/Racer BU/Backups.backupdb/Eric’s Mac Pro/2009-10-10-165828: 443.25 GB now available
Deleted backup /Volumes/Racer BU/Backups.backupdb/Eric’s Mac Pro/2009-10-10-155855: 443.30 GB now available
Deleted backup /Volumes/Racer BU/Backups.backupdb/Eric’s Mac Pro/2009-10-10-145857: 443.36 GB now available
Deleted backup /Volumes/Racer BU/Backups.backupdb/Eric’s Mac Pro/2009-10-10-135852: 443.38 GB now available
Post-back up thinning complete: 5 expired backups removed
Backup completed successfully.
October 12, 2009, 4:46:51 PM
Starting standard backup
Volume at path /Volumes/Racer BU does not appear to be the correct backup volume for this computer. (Cookies do not match)
Backup failed with error: 18
etc...
The long periods between backups are when it is "preparing for backup" and nothing is happening. Sometimes this is while I'm not using it and the machine is asleep.

No sound while time machine prepares for backup

something strange happen to my OS. yesterday i updated to 10.5.2, and now, while time-machine started to prepare it's backup, i tried to listen to a mp3 song.
no sound came. in the system preferences, suddenly i don't have any sound input or output devices.
i have a powerbook g4, 1.87 ghz, 1.5 RAM.
what is going on here???.

something strange happen to my OS. yesterday i updated to 10.5.2, and now, while time-machine started to prepare it's backup, i tried to listen to a mp3 song.
no sound came. in the system preferences, suddenly i don't have any sound input or output devices.
i have a powerbook g4, 1.87 ghz, 1.5 RAM.
what is going on here???.

Time Machine - Preparing backup - It's endless

My C2D Mac Mini is hanging on Time Machine - Preparing Backup for the second time since "Upgrading" to 10.5.2
I had to re-format my backup disk last time and start all the backups again.
Here is an extract from the console log:
29/04/2008 23:50:13 /System/Library/CoreServices/backupd[1094] Starting standard backup
29/04/2008 23:50:13 /System/Library/CoreServices/backupd[1094] Backing up to: /Volumes/LaCie Disk/Backups.backupdb
29/04/2008 23:50:15 /System/Library/CoreServices/backupd[1094] Event store UUIDs don't match for volume: Macintosh HD
29/04/2008 23:50:15 /System/Library/CoreServices/backupd[1094] Node requires deep traversal:/ reason:kFSEDBEventFlagMustScanSubDirs|kFSEDBEventFlagReasonEventDBUntrustable|
Does anyone recognise this? I'm a Mac novice so I don't understand what it all means. I hope I don't have to reformat and start again as I was converted to Mac from PC on the advice that "A Mac Works!"
My backup drive is a 500GB Lacie Mini if that is of any relevance. Spotlight is told not to index the drive and also the Lacie drive is told not to back itself up.
Can anyone help as it's driving me nuts!

Are Lacie really that bad? I thought that the main reason they are mentioned in these forums is that Lacie are one of the only brands of external storage that apple actively promote through their own web stores so there a good chance that quite a few Mac users will buy one. Anyway I can't afford to buy another Hard Drive at the moment and the lacie works perfectly apart from Time Machine.
The problem seems to be with Mac OS the more I delve into these forums and more importantly the 10.5.2. update which is where Time Machine appears to be providing users with a lot of troubles.
The Apple support self service on the website is far from comprehensive as I guess they want you to purchase Apple Care for ongoing support after the 90 days initial period but come on apple give us a break and sort it out or provide a support email address for specific problems!

Can I use a single external drive to maintain time machine backups for two Mac computers?

Hello
We have an older mac mini and macbook air. I have one Western Digital external USB drive. Can I use the same drive to hold and maintain time machine backups for both machines?
I already have the macbook air time-machined on the WD drive. I now want to backup the mac mini onto the same drive. Is it going to over write the time machine backup or is the software smart enough to maintain two separate files, partitions, whatever it does..?

It will maintain separate backups. Note that it's generally advisable to use separate drives for best practice backup, but yes, it will work for both computers, provided you have enough space (need generally 2-3 times the total used file space for both Macs).
Matt

My Time Machine Strategy for both iMac and MacBook...

1) Get 1TB external drive, format as HFS+ (including the Gizmodo hint about reformatting Fat32 drives properly by setting GUID Partition table)
2) Attach external drive to MacBook directly-run Time Machine overnight for initial full backup
3) Attach external drive to iMac directly-run Time Machine overnight for initial full backup
4) Attach external drive to my Mac Mini (running Leopard)-don't run Time Machine
5) Point the iMac and MacBook to the networked drive for future incremental Time Machine backups, by mounting the external drive permanently attached now to the Mac Mini as a shared drive.
This way, I get the tedious original backup thru direct connection-native Firewire speeds, then rely on the networked wired (iMac) and networked wireless (MacBook) connections for the incremental backups (which, given our usage, isn't that major on an hourly or daily basis)
Anyone tried something like this successfully?

If you have tried the fixes in Pondini's Time Machine Troublshooting, specifically #C12 and nothing helps, then it is time to let one of the genius types at an Apple Store take a look.
http://pondini.org/TM/Troubleshooting.html
If you cannot take the Time Capsule to an Apple Store, contact Apple Support directly.
http://www.apple.com/support/contact/

I have a mid2009 MacBook Pro for which I have been using a USB WD HD for Time Machine. I'd like to get a wireless HD and start a new Time Machine backup for this Mac and retire the 5 year old WD drive. Can I start over?

I have a mid2009 MacBook Pro running Mavericks for which I have been using a USB WD HD for Time Machine. I'd like to get a wireless HD and start a new Time Machine backup for this Mac and retire the 5 year old WD drive. Can I start over?

no archive/ backup is perfect, HD clones can be set to make incremental additions, same as time machine however, though they are more time involved in doing so.
See the + and - of all data backup/ archives below and "spread it around".... or the "dont put your eggs all in one basket" philosophy.
Peace
Data Storage Platforms; their Drawbacks & Advantages
#1. Time Machine / Time Capsule
Drawbacks:
1. Time Machine is not bootable, if your internal drive fails, you cannot access files or boot from TM directly from the dead computer.
2. Time machine is controlled by complex software, and while you can delve into the TM backup database for specific file(s) extraction, this is not ideal or desirable.
3. Time machine can and does have the potential for many error codes in which data corruption can occur and your important backup files may not be saved correctly, at all, or even damaged. This extra link of failure in placing software between your data and its recovery is a point of risk and failure. A HD clone is not subject to these errors.
4. Time machine mirrors your internal HD, in which cases of data corruption, this corruption can immediately spread to the backup as the two are linked. TM is perpetually connected (or often) to your computer, and corruption spread to corruption, without isolation, which TM lacks (usually), migrating errors or corruption is either automatic or extremely easy to unwittingly do.
5. Time Machine does not keep endless copies of changed or deleted data, and you are often not notified when it deletes them; likewise you may accidently delete files off your computer and this accident is mirrored on TM.
6. Restoring from TM is quite time intensive.
7. TM is a backup and not a data archive, and therefore by definition a low-level security of vital/important data.
8. TM working premise is a “black box” backup of OS, APPS, settings, and vital data that nearly 100% of users never verify until an emergency hits or their computers internal SSD or HD that is corrupt or dead and this is an extremely bad working premise on vital data.
9. Given that data created and stored is growing exponentially, the fact that TM operates as a “store-it-all” backup nexus makes TM inherently incapable to easily backup massive amounts of data, nor is doing so a good idea.
10. TM working premise is a backup of a users system and active working data, and NOT massive amounts of static data, yet most users never take this into consideration, making TM a high-risk locus of data “bloat”.
11. In the case of Time Capsule, wifi data storage is a less than ideal premise given possible wireless data corruption.
12. TM like all HD-based data is subject to ferromagnetic and mechanical failure.
13. *Level-1 security of your vital data.
Advantages:
1. TM is very easy to use either in automatic mode or in 1-click backups.
2. TM is a perfect novice level simplex backup single-layer security save against internal HD failure or corruption.
3. TM can easily provide a seamless no-gap policy of active data that is often not easily capable in HD clones or HD archives (only if the user is lazy is making data saves).
#2. HD archives
Drawbacks:
1. Like all HD-based data is subject to ferromagnetic and mechanical failure.
2. Unless the user ritually copies working active data to HD external archives, then there is a time-gap of potential missing data; as such users must be proactive in archiving data that is being worked on or recently saved or created.
Advantages:
1. Fills the gap left in a week or 2-week-old HD clone, as an example.
2. Simplex no-software data storage that is isolated and autonomous from the computer (in most cases).
3. HD archives are the best idealized storage source for storing huge and multi-terabytes of data.
4. Best-idealized 1st platform redundancy for data protection.
5. *Perfect primary tier and level-2 security of your vital data.
#3. HD clones (see below for full advantages / drawbacks)
Drawbacks:
1. HD clones can be incrementally updated to hourly or daily, however this is time consuming and HD clones are, often, a week or more old, in which case data between today and the most fresh HD clone can and would be lost (however this gap is filled by use of HD archives listed above or by a TM backup).
2. Like all HD-based data is subject to ferromagnetic and mechanical failure.
Advantages:
1. HD clones are the best, quickest way to get back to 100% full operation in mere seconds.
2. Once a HD clone is created, the creation software (Carbon Copy Cloner or SuperDuper) is no longer needed whatsoever, and unlike TM, which requires complex software for its operational transference of data, a HD clone is its own bootable entity.
3. HD clones are unconnected and isolated from recent corruption.
4. HD clones allow a “portable copy” of your computer that you can likewise connect to another same Mac and have all your APPS and data at hand, which is extremely useful.
5. Rather than, as many users do, thinking of a HD clone as a “complimentary backup” to the use of TM, a HD clone is superior to TM both in ease of returning to 100% quickly, and its autonomous nature; while each has its place, TM can and does fill the gap in, say, a 2 week old clone. As an analogy, the HD clone itself is the brick wall of protection, whereas TM can be thought of as the mortar, which will fill any cracks in data on a week, 2-week, or 1-month old HD clone.
6. Best-idealized 2nd platform redundancy for data protection, and 1st level for system restore of your computers internal HD. (Time machine being 2nd level for system restore of the computer’s internal HD).
7. *Level-2 security of your vital data.
HD cloning software options:
1. SuperDuper HD cloning software APP (free)
2. Carbon Copy Cloner APP (will copy the recovery partition as well)
3. Disk utility HD bootable clone.
#4. Online archives
Drawbacks:
1. Subject to server failure or due to non-payment of your hosting account, it can be suspended.
2. Subject, due to lack of security on your part, to being attacked and hacked/erased.
Advantages:
1. In case of house fire, etc. your data is safe.
2. In travels, and propagating files to friends and likewise, a mere link by email is all that is needed and no large media needs to be sent across the net.
3. Online archives are the perfect and best-idealized 3rd platform redundancy for data protection.
4. Supremely useful in data isolation from backups and local archives in being online and offsite for long-distance security in isolation.
5. *Level-1.5 security of your vital data.
#5. DVD professional archival media
Drawbacks:
1. DVD single-layer disks are limited to 4.7Gigabytes of data.
2. DVD media are, given rough handling, prone to scratches and light-degradation if not stored correctly.
Advantages:
1. Archival DVD professional blank media is rated for in excess of 100+ years.
2. DVD is not subject to mechanical breakdown.
3. DVD archival media is not subject to ferromagnetic degradation.
4. DVD archival media correctly sleeved and stored is currently a supreme storage method of archiving vital data.
5. DVD media is once written and therefore free of data corruption if the write is correct.
6. DVD media is the perfect ideal for “freezing” and isolating old copies of data for reference in case newer generations of data become corrupted and an older copy is needed to revert to.
7. Best-idealized 4th platform redundancy for data protection.
8. *Level-3 (highest) security of your vital data.
[*Level-4 data security under development as once-written metallic plates and synthetic sapphire and likewise ultra-long-term data storage]
#6. Cloud based storage
Drawbacks:
1. Cloud storage can only be quasi-possessed.
2. No genuine true security and privacy of data.
3. Should never be considered for vital data storage or especially long-term.
4. *Level-0 security of your vital data.
Advantages:
1. Quick, easy and cheap storage location for simplex files for transfer to keep on hand and yet off the computer.
2. Easy source for small-file data sharing.

Time Machine backup for old computer has been named for new computer

On my new Time Capsule, I backed up the entire disk from my older computer. While consulting with a live help technician for an unrelated problem, he had me reset the Time Capsule using the newer computer. To resume use of the Time Machine backup from my older computer, I had to gain permission . . . and subsequently discovered the reason why. Reseting with the new computer caused the backup volume to be renamed with the new computer's name.
Sooo, 1) how do I correct the naming error, and 2) will further confusion occur when I then go to back up the new computer?

It may or may not ask you to reformat the disk when you set it up as the backup for that new computer. If it does, I think you can cancel it.
What I would do is open Migration Assistant, then import your applications/documents/etc. onto the new computer, and then use the Time Machine disk for backup (formatting it if it asks you to).
You'll at least have recent files and stuff like that, which may not be as good as an incremental history but at least it's something.

How to select correct time machine backup for migration assistant

We have two MacBooks backing up to one Time Capsule using time machine: let's call them H and R.
I have had to reinstall Leopard on Macbook H and am now trying to restore using Migration Assistant.
Migration Assistant finds the Time Capsule and identifies that there are two Time Machine Backups, but doesn't give an option to select the one to use.
Whenever I click 'Continue' it does the 'Checking time machine backup' (for hours), then brings up the data to restore, but every time it comes up with the data and settings from Macbook R.
How can I tell Migration Assistant which Time Machine Backup I want to use?

Brilliant. That was it.
I used the other MacBook to run Disk Utility on my backup volume and repaired it: #A5 is bang on.
Then, Setup Assistant saw both backups and let me select the one I wanted. It's now transferring my stuff.
Very relieved and extremely grateful.
Your apple tips should come with every mac and time capsule.

Time Machine Background for my desktop or screen saver

How can I use the vortex time machine background for my desktop or screen saver background?
Thanks

Hello,
In short....you can't. You can use the static image as a wallpaper or slideshow ScreenSaver but you cannot use the "Vortex" engine for the animated Time Machine effects. It appears that the "Vortex" engine is part of the Resources for the Finder application itself as evidenced by the related files and images found in the Finder application Package. I don't know if anyone could create a "hack", utilizing the existing resources, to make a ScreenSaver file or not. I have zero experience with ScreenSavers. I just use them.
I know that there are interesting integer parameters in some of the "Vortex" files but I do not have the "bullocks" to experiment with them.
Sorry.....
pw

TM stops after 170 KB, TM prepares for ages, TM stops with error

Here's another one:
TM stops after 170 KB, TM prepares for ages, TM stops with error
I've had it all - after some successful backups. Now I can't make any; error messages ("could not complete because an error has occurred" - thank you very much, Apple, for that most helpful explanation).
Apple turns us all into beta testers! Another product that is shipped long before it's ready due to marketing strategies - and customers are the idiots.
I agree: +Don't use TM!+

I had a very similar problem a few months ago. I spent several days troubleshooting it. Try disabling TM and see if the Finder stops freezing. You might need to wait two or three days to find out. Then try disconnecting your external disk drives and see what happens after another two or three days. I traced my problem back to a Western Digital external disk drive, so I contacted Western Digital via their web site. The next day, they emailed me directions on how to update the disk drive's firmware. I did the update and the problem went away.

Time Machine preparing WAY too many items

I just noticed that my Time Machine backups are taking an unusually long time. So when the last one finished, I immediately ran a second backup with Time Machine preferences open so I could watch the progress bar. It said it was “Preparing (about) 3,200 Items...” for a total of 660 KB. The backup took about 6 or 7 minutes. This now happens every time TM does a backup.
Obviously this is very wrong given that only a few seconds had passed between backups and nothing had changed. There should have been a handful of items to prepare, and the backup should have taken a few seconds. I installed TimeTracker, and it showed a few dozen items had been backed up. I made sure to open every folder/subfolder but found nothing that would account for 3,200 items.
Anyone have any idea what might be going on?

MacVal wrote:
When I reinstalled my software I didn't drag any of the old preference files back over either, just in case something was corrupted. And everything I installed software-wise has been running on 10.6.8 forever with no issues. The only exceptions were Apple Remote Desktop, which I did not reinstall this time, and a new generation of Plex media server I've been trying out, which I recently upgraded to from an older version.
In theory, a incompatible or faulty kernel extension could cause this, but it's highly doubtful.
I assume there is no way that any my documents could cause strange system behaviour?
Never say never, but highly unlikely.
At times both before and after this rebuild when I've been playing around with TM preferences (selecting the drive, setting which folders to exclude) my CPU will run very high (can't recall the % exactly) and my fans will kick into high gear. Obviously this is not normal, especially with nothing else running at the time. Something is clearly messing with TM.
Ah, yes, very suspicious. I don't recall seeing this before.
Perhaps the preference file (where all that is kept) is damaged. Try a "full reset" of Time Machine, per #A5 in Time Machine - Troubleshooting.
If that doesn't help:
Are you running any 3rd-party disk/directory monitoring apps, such as the Directory Protection feature of Tech Tools?
Does that happen with other pages in System Preferences?
Does it happen in a different user account (if you don't have one, create one via System Prefs > Accounts). You'll have to unlock the panel to make changes from a non-Admin account.
If none of that provides any light, a clue may be lurking in your logs. See the tan box in OSX Log Files to locate your system.log, then the blue box to decipher it. Use the technique in the Monitoring the log ... section to see if any messages appear while you're using the TM Prefs window. If they do, copy and post them (or, if there are a lot of them, a reasonable portion) here.
Message was edited by: Pondini

Time Machine Preparing for ages

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