The thread you posted contains two interesting items:
1) The DX58SO motherboard only has four memory slots and cannot run tripple channel memory as advertised. The most memory you can install is 16GB. This was a complaint and should not be a concern to you.
2) Some DX58SO motherboards had a design defect that were not supposed to have been shipped. The defect was related to the SATA ports that do not work under certain instances. If your SATA devices all work without issue, I would not worry about this if I was you.
I used to own a DX58SO motherboard with my previous i7 960. I actually ran it with Super Talent 1600 memory that ran at 1600MHz. I never had any issues with this motherboard since owning it.
The replacement for this motherboard, which is the DX58SO2, is another story. I have had nothing but problems with my DX58SO2, and the RMAs Intel sent me were worse than the boards they replaced. Due to my experience with the DX58SO2 motherboard, I have stopped purchasing and using Intel motherboards. I now use a GigaByte motherboard that is more stable and of a higher quality than these newer X58 Intel motherboards.