TM froze while deep traversing the node?

Question

After several successful backups to time capsule, time machine writes
Event store UUIDs don't match for volume: OSX
Node requires deep traversal:/ reason:kFSEDBEventFlagMustScanSubDirs|kFSEDBEventFlagReasonEventDBUntrustable|
in log and them seems to be sitting forever in "preparing backup" state.
I've started backup at 8pm, now it's nearly 8am, and still no noticeable changes.
I've tried to connect to TC via ethernet, but neither AirPort Utility, nor TM finds it in this case (I have all the global Bonjour announcing checkboxes set).
The last problem, is that running TM backup makes OSX quite unresponsive. Programs like iPulse (generic system monitoring) and Quicksilver just float without updating their GUI. So it's hard to continue working, while TM is re-indexing all the HDD.

Answer 1

Farcaller,
Welcome to the Apple discussions!
*_Time Machine May Report "Preparing..." For a Long Time_*
Consider these factors regarding an extended period of "Preparing...". Consider each topic separately and do not attempt to act on all of them at once.
*Recent Crash or Other Major System Event* (Deep Traversal)
The reasons for this process are described in an article by George Schreyer. “During the preparation step it checks the FSEvents log for consistency. If it determines that something isn't quite right it has to rescan the whole disk. This can take quite awhile. A full rescan is always triggered by a crash, an unplanned shut down event or by booting from some other bootable disk between backups…. After a crash, Time Machine must scan the whole disk to determine what it has to do because it cannot trust the information that it left behind. Connected via an Ethernet connection, this phase would typically take 20 minutes on an older PowerBook. Being connected wirelessly stretches this phase out to over 3 hours.” [http://www.girr.org/mac_stuff/backups.html]
According to the following KB article it can sometimes take a very long time if Time Machine begins this “deep traversal” and has to compare data inventories. This may apply to your situation, particularly if many Gigs of data are involved. (http://support.apple.com/kb/TS1516)
*Anti-Virus Software*
Running anti-virus software can interfere with the backup process. Either disable it altogether, or try the suggestion outlined here, “If you use third-party anti-virus scanning software and have issues, make sure your Time Machine back up folder (Backups.backupdb on the Time Machine disk) is excluded from virus scanning.” (http://support.apple.com/kb/TS1516)
*Software Updates* #
Installing new software, upgrading existing software, or updating Mac OS X system software can create major changes in the structure of your Macs directories. Time Machine will backup every file that has changed since the installation.
If you take a look at the Console logs Time Machine may be reporting that your backups need "deep traversal". That's fine. Time Machine knows what is wrong and how to fix it. If you have a great deal of data, it may take quite awhile.
After an OS update (like 10.5.5) Time Machine realizes the system no longer matches what it looked like during the previous backup. So it has determined that it's earlier catalogue of what-should-be-where is 'untrustable'. So it is going to go item-by-item comparing the before and after of your system. If you have just performed an OS Update then Time Machine knows what it's doing - let it do it!
*Spotlight Keeps Indexing Backup Drive* #
It may be that Time Machine can’t proceed or complete a backup due to a Spotlight indexing error. During this period, take a look at the Spotlight icon in the upper right corner of your screen. Is there a tiny dot pulsating in the center of the spyglass? Click on the icon. Is there a progress bar displayed? Generally Spotlight indexing is a good thing. But at time it may hang and never progress, preventing backups from taking place.
Go to System Prefs --> Spotlight --> Privacy Tab.
Drag your Time Machine disk into the window. It should now be among the items to exclude from indexing.
Now quit System Prefs.
Reopen System Prefs and remove ("-") the Time Machine disk from the window.
This should clear out Spotlights cache. Naturally, Spotlight should begin indexing again (maybe even for a few hours depending on how much data there is), but it should eventually stop.
*Reboot Time Capsule* #
Stop the backup from the Time Machine menu.
When the Time Machine icon stops spinning, unplug the TC from the wall outlet.
Wait 10-15 seconds.
Re-plug it in again.
After it has restarted (30-60 seconds), attempt another backup.
Time Machine will report “Preparing…” again, but it shouldn’t be lasting more than a couple of hours.
Let us know if any of the suggestions above helped in your case.
Cheers!