Apple’s retail stores have suspended sales of iPhone 4 slide-on cases because of concerns about trapped dirt causing scratches and cracks — the so-called “Glassgate” issue.
The ban is impacting at least half-a-dozen case makers who expected to have a blockbuster holiday season, said a source who works in the case industry and asked for anonymity.
At least one manufacturer has hundreds of thousands of battery pack cases that have been suspended by Apple’s stores, despite being certified by Apple’s “Made for iPhone” program.
“Glassgate is a real problem,” said the source. “Apple is not approving slide-on cases right now for its stores.”

