It's like their is a ghost in the house pushing the button to eject. It doesn't occur all the time, like it won't eject the tray as soon as I push it back in, but it does occur say every 5 minutes or so (or perhaps less frequently like once every time I use the laptop over several hours). I don't know what's going on here, but the dvd/cd tray keeps ejecting (randomly) on it's own. I'm using a Dell Inspiron 1000 laptop computer with Ubuntu 9.x (latest version).