What the heck is up with FedEx being all weird and stuff?

So I got a Macbook Pro from someone in the U.S but when I got it, it was acting funk so I had to send it back to this person so that the person can bring it to Apple to fix it.

Now, I’ve sent the Macbook pro back with FedEx and I’ve been checking the status to see if it has arrived yet or not and it has arrived at the person’s address but then it went to Sun Valley and then back to Memphis TN?! So what the heck is up?

And what does Int’l Shipment Release, Delivery exception & Clearance delay means?

Here’s how the tracking status looks like:

May 25, 2010 23:50 Int’l shipment release MEMPHIS, TN
May 25, 2010 09:36 Delivery exception SUN VALLEY, CA
May 25, 2010 07:40 On FedEx vehicle for delivery SUN VALLEY, CA
May 25, 2010 07:38 At local FedEx facility SUN VALLEY, CA
May 25, 2010 04:36 At dest sort facility BURBANK, CA
May 25, 2010 02:57 Departed FedEx location MEMPHIS, TN
May 22, 2010 01:17 Clearance delay MEMPHIS, TN
May 22, 2010 00:39 In transit MEMPHIS, TN
May 22, 2010 00:05 Arrived at FedEx location MEMPHIS, TN
May 21, 2010 21:28 In transit AGUADILLA, PR
May 21, 2010 17:17 Left FedEx origin facility ORANJESTAD AW
May 21, 2010 16:08 In transit ORANJESTAD AW
May 20, 2010 17:35 Picked up ORANJESTAD AW
May 20, 2010 17:27 At local FedEx facility ORANJESTAD AW
May 20, 2010 17:06 Picked up ORANJESTAD AW

Look at the bolds, it’s weird. Why Int’l shipment release on May 25th 23:50? And it was in Burbank then it went to Sun Valley AND then back to Memphis??