Must say the nem client is really stable for harvesting for the first live version. I remember Nxt client did always stop forging to begin with(memory etc...).
Expect some GUI and export wallet errors everything good.
It would look strange if NEM had such issues after being developed for that long, wouldn't it?
NXt was developed just as long before it was launched wasn't it? It was under the radar for one year before the big 8 whales and their 67 friends came along to launch it in November 2013. No? So, why does it look strange if there were any issues? You develop solutions don't you? Even Microsoft, such a huge multi billion organisation, have bugs in their releases. Surely, you are no novice here in the game. Are you being sarcastic?