I tried to use a USB charger from another manufacturer (Belkin), thinking to myself that USB power is USB power. Right? Wrong. Apparently a lot of the aftermarket chargers will cause the touchscreen to become horribly inaccurate while the droid is charging. When it is fully charged it will work fine, even if still attached to the charger. So far about half of the chargers I've tried experience this problem, typically the less expensive ones. Has anyone else experienced this? What charger(s) do you use?