No, the pixel issue. Almost 90% of the DSs on initial release had a pizxel burn-out issue, which Nintendo released knowing it would happen.
90%.. do you have a source for that number or is that simply your estimation? I know three people that bought a DS on launch day and none of them had any pixel issues (another friend of mine who bought one in March this year had one bad pixel but that's hardly a launch unit). Besides, the PSP had the same issue and it wasn't a matter of the timeliness of launching the product, it was simply an effect of the LCD technology at the time being mass produced as it was.
Also, Nintendo did replace any screens sent back to them.. so they at least handled the problem.