You are experiencing a data communications issue at some point. When large files are transferred they are broken up into packets and then reassembled. When some of the data is corrupted then the packets don't get reassembled in the correct order, or some of the packets aren't the correct length and so the rendering program thinks bits that are supposed to be telling it one thing are telling it something else because they are the wrong number of positions from the header. I've experienced a couple of routers with memory that started going bad. The first evidence of a problem was when pictures in web pages started getting scrambled exactly the way the examples in the question you linked to were. Why pictures? Because they are often the largest files that make up part of a page. If any portion of the file lands on the bad memory, the whole photo gets corrupted.

In the case of your photos there are several points in the chain that may have caused your files to become corrupted.

• The buffer to memory card transfer
• The memory card to reader transfer
• The reader to RAM transfer
• the RAM to Hard Disk transfer

The further down the chain the problem occurred, the easier it will be to recover.

The first thing to do is to write-protect your memory card. The next thing to do is to take some test shots with a different memory card. Do everything else exactly the same to see if the problem reoccurs. If it does, try moving the photos of the test shots using a different method. Instead of a card reader, try to use the camera to do the transfer. Use a USB port that is on a different USB bus than the one your card reader is connected to. (Even internal card readers usually connect to the PCI bus via USB.) If there is one available, see if a different computer can read the card. Change one thing at a time so that you can isolate where the communications problem is.