We have no idea how widespread the problem is, but there is certainly a group of people trying to raise some hell in their own corner of the internets over some supposed vertical-line issues that later-gen PowerBooks are claimed to experience between 12-24 months into their lives. We understand that not everyone buys a laptop a year like your average (broke-ass) Engadget editor, so if these issues are in fact that common, we hope Apple does see it fit to extend that Display Repair Extension Program to users experiencing
this new kind
of screen issue
P.S. -You having the issue yourself? Shout it out in comments.