Installation stalls at "Moving items into place"

Launch the Console application in any of the following ways:

☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

☞ In the Finder, press the key combination shift-command-U. The application is in the folder that opens.

☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Console in the page that opens.

Select "/var/log/install.log" from the file list. Post the messages from the last installation attempt, starting from the time when you launched the Installer or Software Update. Post the log text, please, not a screenshot. Edit out excessive repeats, if any.

I am having the same problem. I've been having it since I got my Macbook Pro (almost a year ago). I've done the whole "checking permissions" thing a million times and it never helps. The last couple of times, the only way I was able to update was to wipe my HD, install the update, and then put everything back on again. The first time it happened, someone at Apple had a quick fix but I don't remember what it was. Apparently this is a realtively common problem, but since it still keeps on happening, I'm wondering what to do. If it's a problem with something in my data, is there any way I can scan it to get rid of the problem?

Any help would be greatly appreciated. Thanks!

The following is what I see at the end of the ../install.log

Oct 8 20:42:37 william-camps-computer-2 _spotlight[1091]: Begin script: killiTunesHelper

Oct 8 20:42:38 william-camps-computer-2 _spotlight[1095]: End script: killiTunesHelper

Oct 8 20:42:38 william-camps-computer-2 _spotlight[1096]: 6 Install Scripts run.

Oct 8 20:42:38 william-camps-computer-2 installd[663]: PackageKit: Executing script "preinstall" in /private/tmp/PKInstallSandbox.yNJytc/Scripts/com.apple.pkg.MobileDevice.m7nFtq

Oct 8 20:42:38 william-camps-computer-2 _spotlight[1099]: Running Install Scripts . . .

Oct 8 20:42:38 william-camps-computer-2 _spotlight[1101]: Begin script: usbmuxdpre

Oct 8 20:42:38 william-camps-computer-2 installd[663]: preinstall: (kernel) Kext com.apple.driver.AppleMobileDevice not found for unload request.

Oct 8 20:42:38 william-camps-computer-2 installd[663]: preinstall: Failed to unload com.apple.driver.AppleMobileDevice - (libkern/kext) not found.

Oct 8 20:42:38 william-camps-computer-2 installd[663]: preinstall: (kernel) Kext com.apple.macos.driver.AppleUSBEthernetHost not found for unload request.

Oct 8 20:42:38 william-camps-computer-2 installd[663]: preinstall: Failed to unload com.apple.macos.driver.AppleUSBEthernetHost - (libkern/kext) not found.

Oct 8 20:42:38 william-camps-computer-2 _spotlight[1107]: End script: usbmuxdpre

Oct 8 20:42:38 william-camps-computer-2 _spotlight[1108]: 1 Install Scripts run.

Oct 8 20:42:38 william-camps-computer-2 installd[663]: PackageKit: Shoving /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/Cleanup At Startup/PKInstallSandbox-tmp/Root (4 items) to /

Oct 8 20:42:38 william-camps-computer-2 installd[663]: PackageKit: Failed to move active dyld cache file /var/db/dyld/dyld_shared_cache_x86_64 to /var/run: No such file or directory (2)

Oct 8 20:42:38 william-camps-computer-2 installd[663]: PackageKit: Failed to move active dyld cache file /var/db/dyld/dyld_shared_cache_x86_64.map to /var/run: No such file or directory (2)