I'm not sure what's going on here. I have a SanDisk Ultra 32GB MicroSDHC card, class 10. I just got it July 5th. When I got it, I plugged it into my YP-G1 Android media player, and formatted it from the device. The format was very quick. Maybe a minute, then I put my music library on there. It's about 20GB worth of music. On my usual music player app, which is Winamp, when I click on genre, it takes a very long time before it shows my genres, then I can play my music. On my SD card I had before this one, it wouldn't take nearly as long. I tried another music player, and I thought the problem went away, but it did the same thing when I opened it for the second time. What could be the problem? Is it the SanDisck card? Is it that I didn't format it while plugged into my computer, like I did on my old SD card? This is getting annoying, because I listen to my music so often!