Some people... I wear.... how poor Apple's quality control is?
The fact that they release a build to TESTERS which they thought was final, they find out there are issues and decide to FIX it before release to the PUBLIC?
Its not like the gold master was released publicly. Gold master means "we have no issues we know about and think we can release it"... now they know about it and fixed it.
If you find a problem fixed through the normal means of testing a product, I would call that GOOD QUALITY CONTROL. The issue wasn't in the prior build that was released to testers; and doesn't appear to affect all iPad users and may not have occurred within the lab.
I don't think you're familiar with software development cycles and where the term "Golden Master" comes from.
"Good quality control" requires an organized development/testing approach, milestones (including code freeze), and regression testing after the code is frozen. Quite simply, the regression testing should have included thorough WiFi test cases and I'm surprised that it didn't catch this issue, which was apparently noticed by just about everyone who installed it. And all of this should have happened prior to the golden master being produced (unless Apple has changed their definition of "golden master").