Hi all, I did a quick search but didn't find any other posts that describe the problem I'm having. I got an HTC Desire Z a few months ago, and so far it's great, but I'm having a problem with music on it. Not just the stock music player - I've tried that as well as 2 other ones (Meridian and PowerAMP), and all have the same issue. When I create a playlist and add songs to it (in any of the 3 afore-mentioned applications), it works fine... for awhile. But later on, that playlist simply disappears with no explanation as to where it went. When I first got the phone, I created 2 playlists, and those ones (strangely enough) seem to remain there. But, when I add songs to them, those songs will eventually disappear from the playlist, but the playlist itself will stay there. I haven't deleted any of the tracks from the SD card. I have no idea what's different about those 2 playlists versus any of the new ones I try creating. Also, when I take pics or videos, sometimes they don't appear in the gallery, yet when I connect the phone to my computer I can see them on the SD card. At some point, they may show up in the gallery, and then at some other point they may disappear again. Does anyone else have these problems? Thanks for any help.