Reported by Heise Security today:
"Many Acer laptops have a dangerous backdoor, which can be used by websites to gain complete control over the laptop. The problem lies with the LunchApp.APlunch Active X control, which is installed by default and which heise Security found on all the Acer laptops it tested . . ."
Update: F-Secure's Report on Acer's "Preloaded Vulnerability".