Guys.....
I literally made an account on this site to tell you how to fix this problem. I was having the same problem, and reading all your responses, and I must say some of you guys are complete and total idiots who are over thinking this by a long shot. Talking about how you need to root your phone and install all this ****..... yada yada yada. NO! Micro SD cards have different speed classes (either 2, 4, 6, or 10). The X2 dual core processor is too fast for the crappy class 2 or 4, so go out and buy either a 6 or a 10. BAM! Problem Solved!
Worked perfectly for me
SD Speed Class - SD Association
OK, but explain Amazon and Pandora music playback skipping, since its streamed and has nothing to do with the SD card?
Apex 2.0 Revolution
And root + the memory allocation fix takes care of that. Another free fix. Case in point with all these "free fixes" to make the DX2 work like it should have out of the box, I'm glad I switched to the D3.