http://www.edge-online.co.uk/archives/2005/02/square_button_i.php
Is this the pop back up thing? not the response thing?
Among the reported technical glitches in the first batch of PSPs was a problem with the square button being both less responsive than the others, and refusing to pop back up after being depressed. Reports of the defect — and the button's seemingly related curious positioning overlapping the PSPs screen — led to the widely reported response by Sony Computer Entertainment president Ken Kutaragi that "the button's location is [architectured] on purpose. It's according to specifications. This is something that we've created, and this is our specification. There was a clear purpose to it, and it wasn't a mistake."
Despite the claim, Sony announced Tuesday that it has isolated a manufacturing problem in the molding and coating of the PSPs outer shell, where excess untrimmed resin may be responsible for the square button's catch and hold. The problem, which Sony claims affected only 0.6% of the initial 510,000 units shipped in 2004, has been resolved and none of the newer units made from the start of the new year on should be affected. In addition, Sony has instituted a return and replacement procedure for anyone with a defective unit.
Is this the pop back up thing? not the response thing?