I just received my first MP3 player (Samsung YP-F1X, 512 Mb) for Christmas '05, and I'm seeing extremely poor battery life. The manual says it should get about 10 hours of play time from a full charge; a review I read said it was really about 8 hours. I'm only seeing between 4 and 4.5 hours from a full charge. I've cut the display contrast down to its lowest level. I'm avoiding all forwarding/rewinding/other menu functions. I only charge it after the "low battery life" notice comes up and shuts down the player. And I charge it completely at that point. It also may be helpful to note that the manual says it should take about 2.5 hours to fully charge the player from fully discharged. It's only taking 1.5 hours to charge mine. I would love to hear from anyone with any answers or suggestions. I emailed Samsung last week, but I still haven't heard back from them, and I'm getting very frustrated. Thank you so much for your help.