Time Machine backups after changing Logic Board

Important details about Time Machine backups.
Main article covers altering the .SparseBundle file (several hundred gigs) that relates to the old machine, so that it now recognises the new mac Logic Board's MAC address and HDD UUID.  

Forum posts stress the importance of a SuperDuper clone, that is way more efficient in restoring a machine to scratch.  
There are also others who state that Time Machine restorations can be done via the Leopard install disc and selecting Utilities > Restore From Time Machine.

http://www.tuaw.com/2009/07/20/mac-301-time-machine-backups-after-your-macs-brain-surgery/

Why iTunes takes ages to backup the iPhone - Solution?

So, I've had this 2G iPhone for ages and hardly ever done a backup on iTunes. Why? Because it takes so damn long to do it! I've left it on for over 2hrs only to see it come up with an error message that says it failed for some unknown reason. I forget the exact words, but basically I shouted expletives at it.

Scouring around on the web and multiple forums, I think I may finally have the answer!
It seems that for someone, the culprit was AppSniper! It caches the billions of AppStore icons that it sees for viewing offline, and over time this seems to have accumulated to the point where iTunes practically gives up on backing up the iPhone. When you think about it, AppSniper does see on average 100 new apps EVERY DAY.

So I'm giving this a try, and hopefully it solves my problem. Just deleting the cache took just over 2mins....

Here's the link to the Apple support forum: http://discussions.apple.com/thread.jspa?messageID=9129763�

UPDATE: IT WORKED!!!!! :D

First backup took just over 15mins. Incrementals were over in just afew minutes!!! Amazing!