[/quote]

It should be noticeably faster because it's not downloading the blocks from other nodes but importing them from the disk. However, it still has to verify the blockchain data, so that does take time. Also, the bootstrap.dat file will only cover up until block height 317000, and then it will have to start downloading blocks again.
[/quote]

You are absolutely right, the importing is over and now synchronizing the remaining parts, 5 weeks. 

i think it works now. It is showing status "Importing blocks from disk".  But still importing overnight, still takes time. Thank you all for your kind support

my uploaded image is too small so I reupload it again.

/Library/Application Support/
http://i57.tinypic.com/rhpbvn.png

/Users/username/Library/Application Support/
http://i57.tinypic.com/10xub1j.png

last with my own bitcoin customized installed directory
http://i62.tinypic.com/2zz195k.png


Any Help would be highly appreciated!!

After turn on the hidden file , i still could not find the subfolder "Bitcoin" to put in the bootstrap.dat file, so I capture directory on both paths on my Mac,

/Library/Application Support/

http://i57.tinypic.com/15dqsl4.png

/Users/username/Library/Application Support/
http://i57.tinypic.com/2cfwp5l.png


last with my own bit coin customized installed directory
http://i57.tinypic.com/119cpjc.png



Now, I got bootstrap file but still could not find where to put it to.  I feel like a monkey could not peel off his banana.

Help please.

i'm running on Mac 10.9.3.

I checked on all location, including

/Users/username/Library       -This path does not have subfolder Application Support

and

/Library/Application Support   -This path does not have subfolder bitcoin.


Then I try to open Bitcoin qt for a while, then close it.


What should i do next?


BTW, When I installed the Bitcoin QT, i did not install on the default folder but I put it under  /BTC  (my own made folder)

Many thanks for the suggestion.  I got 22Gb in one file(bootstrap.dat). What should i do next?  How to import bootstrap to Bitcoin Core?

 Newbie question: Just installed Bitcoin Core 2 days ago. Start synchronizing the block chain since (24 hours x 2) on Macbook 10.9.3  So far, I got only "Processed 239569 blocks, last received block generated 1 year and 16 weeks ago". The last received block still changing but...
     Why it is painfully slow like this? Any tip to accelerate the speed of synchronizing ?

Thanks a bunch for any advise.