Hanging on boot in 10.7.x - Spinning wheel of insanity

Hello All,
Been having issues rebooting in Lion for months... since I got this machine and Lion, in fact.
On reboot, almost always — but not 100% of the time, maddeningly — I will end up getting stuck with the spinning progress wheel, and never reach the login screen. I've left it running like that overnight once or twice just to be sure... it's well and truly hung.
Whenever this happens, my one and only workaround so far has been to force restart, boot into recovery disk, run disk utility, and repair the disk — which will always turn up file count errors, etc.  Following this, a (third) reboot is usually succesful.
I've tried reinstalling Lion once or twice, but this has not resolved the issue. It's also been persistent for at least two iterations of Lion (10.7.3/2).
I've also got Bootcamp with Windows 7 on the same drive, FYI. That boots flawlessly. Oh, the irony.
Any words of wisdom from the community? Would love to finally bury this bug. Between the reboots and the inevitable Spotlight reindexing it chews up untold minutes of cat-video watching time.
I've attached the console.log from one such recent failed boot, below.
Thanks in advance!
Michael
Mar 13 14:57:11 localhost bootlog[0]: BOOT_TIME 1331665031 0
Mar 13 14:57:13 localhost com.apple.launchd[1]: *** launchd[1] has started up. ***
Mar 13 14:57:13 localhost com.apple.launchd[1]: *** Verbose boot, will log to /dev/console. ***
Mar 13 14:57:18 localhost com.apple.launchd[1] (com.apple.sandboxd): Unknown value for key POSIXSpawnType: Interactive
Mar 13 14:57:24 localhost com.apple.pfctl[33]: No ALTQ support in kernel
Mar 13 14:57:24 localhost com.apple.pfctl[33]: ALTQ related functions disabled
Mar 13 14:57:25 localhost com.apple.ucupdate.plist[25]: ucupdate: Checked 1 update, no match found.
Mar 13 14:57:29 localhost com.paceap.eden.licensed[57]: licenseDaemon-FusionHybrid: launched with pid 57
Mar 13 14:57:30 localhost UserEventAgent[11]: starting CaptiveNetworkSupport as SystemEventAgent built May 25 2011 12:27:35
Mar 13 14:57:30 localhost UserEventAgent[11]: CaptiveNetworkSupport:CreateInterfaceWatchList:2788 WiFi Devices Found.
Mar 13 14:57:30 localhost UserEventAgent[11]: CaptiveNetworkSupport:CaptivePublishState:1211 en1 - PreProbe
Mar 13 14:57:30 localhost UserEventAgent[11]: CaptiveNetworkSupport:CaptiveSCRebuildCache:81 Failed to get service order
Mar 13 14:57:30: --- last message repeated 1 time ---
Mar 13 14:57:30 localhost UserEventAgent[11]: CaptiveNetworkSupport:CaptivePublishState:1211 en1 - PreProbe
Mar 13 14:57:30 localhost UserEventAgent[11]: CaptiveNetworkSupport:CaptiveSCRebuildCache:81 Failed to get service order
Mar 13 14:57:31: --- last message repeated 1 time ---
Mar 13 14:57:31 localhost UserEventAgent[11]: CertsKeychainMonitor: configuring
Mar 13 14:57:33 localhost mDNSResponder[38]: mDNSResponder mDNSResponder-320.14.0 (Nov 16 2011 01:16:56) starting OSXVers 11
Mar 13 14:57:35 localhost airportd[70]: _processDLILEvent: en1 attached (down)
Mar 13 14:57:35 localhost com.apple.usbmuxd[24]: usbmuxd-268.5 on Jan  5 2012 at 03:34:01, running 64 bit
Mar 13 14:57:35 localhost UserEventAgent[11]: CaptiveNetworkSupport:CaptiveSCRebuildCache:81 Failed to get service order
Mar 13 14:57:35: --- last message repeated 1 time ---
Mar 13 14:57:35 localhost UserEventAgent[11]: CaptiveNetworkSupport:CaptivePublishState:1211 en1 - PreProbe
Mar 13 14:57:36 localhost configd[14]: network configuration changed.
Mar 13 14:57:36 Michael-Mac-Deux configd[14]: setting hostname to "Michael-Mac-Deux.local"
Mar 13 14:57:36 Michael-Mac-Deux systemkeychain[79]: done file: /var/run/systemkeychaincheck.done
Mar 13 14:57:36 Michael-Mac-Deux configd[14]: network configuration changed.
Mar 13 14:57:37: --- last message repeated 1 time ---
Mar 13 14:57:37 Michael-Mac-Deux mDNSResponder[38]: D2D_IPC: Loaded
Mar 13 14:57:37 Michael-Mac-Deux mDNSResponder[38]: D2DInitialize succeeded
Mar 13 14:57:38 Michael-Mac-Deux UserEventAgent[11]: ServermgrdRegistration cannot load config data
Mar 13 14:57:38 Michael-Mac-Deux UserEventAgent[11]: get_backup_share_points no AFP
Mar 13 14:57:38 Michael-Mac-Deux com.apple.kextd[10]: Can't load /System/Library/Extensions/System.kext/PlugIns/IOKit6.0.kext - no code for running kernel's architecture.
Mar 13 14:57:38 Michael-Mac-Deux com.apple.kextd[10]: Load com.apple.kernel.iokit failed; removing personalities from kernel.
Mar 13 14:57:39 Michael-Mac-Deux loginwindow[40]: Login Window Application Started
Mar 13 14:57:40 Michael-Mac-Deux netbiosd[90]: Unable to start NetBIOS name service:
Mar 13 14:57:41 Michael-Mac-Deux rpcsvchost[103]: sandbox_init: com.apple.msrpc.netlogon.sb succeeded
Mar 13 14:57:41 Michael-Mac-Deux stackshot[28]: Timed out waiting for IOKit to finish matching.

Have you tried:
Install or Reinstall Lion from Scratch
If possible backup your files to an external drive or second internal drive.
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Erase the hard drive:
Select Disk Utility from the main menu and click on the Continue button.
After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area.  If it does not say "Verified" then the drive is failing or has failed and will need replacing.  SMART info will not be reported  on external drives. Otherwise, click on the Erase tab in the DU main window.
Set the format type to Mac OS Extended (Journaled.) Click on the Erase button and wait until the process has completed.
Quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion and click on the Install button.
Note: You can also re-download the Lion installer by opening the App Store application. Hold down the OPTION key and click on the Purchases icon in the toolbar. You should now see an active Install button to the right of your Lion purchase entry. There are situations in which this will not work. For example, if you are already booted into the Lion you originally purchased with your Apple ID or if an instance of the Lion installer is located anywhere on your computer.

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