is reporting that several defective PSP units have been shipped, suffering from problems such as dead pixels (as many as 3 per screen with the problem), broken UMD drives, air bubbles in the screens, dust in the screens, and the analog "nubs" not working, or actually falling off. Most retailers are stressing the fact that these problems don't occur in the majority of PSPs, but take caution in importing until Sony gives an official announcement. Sony has yet to make any official announcement about any of these issues, and about how users with any of these problems can recitfy them.