Brand new Vostro 1500 - love it. But the touchpad acts stupid while I am using it with the AC adapter. I have reinstalled the synaptics driver. I've also reinstalled it straight from the product website, still to no avail - the touchpad will randomly click things as you move the mouse cursor around the screen (almost as if it is sensing that you are tapping the touchpad with your finger or hitting the left button.) As soon as it runs on battery power it is fine. One solution to the issue is to disable touchpad tapping in the settings. That's annoying, because I love using the touchpad to click instead of the dedicated mouse buttons. PLEASE...anyone...help? Anyone else experiencing this issue?