I have my new NX5 for about two weeks now and I'm thrilled. I made the choice, having read the warnings here, to hold off on the 128 GB storage unit and go with tried and true SDHC cards. The camera seems to be working fine.
I understand the issue surrounding the firmware update. Questions:
Are there any overflow problems that can occur if I'm just using two 32 GB SDHC card and not the 128 GB accessory?
Have any problems been reports AFTER installation of the upgrade?
BTW, what class of SDHC card are you using? At the suggestion of my dealer, I went with class 6.