This early launch did come with some trouble, as technical problems appeared in a portion of Xbox 360 units sold. The most well-known problem is the "red ring of death" and Error E74, which received a great deal of attention due to some users having to replace their consoles multiple times. Microsoft attempted to address this by offering a three-year warranty on all affected consoles and repairing them free of charge. It also retroactively reimbursed owners of affected systems who paid for repairs. According to "The Mercury News", new models of the console featuring 65-nanometer technology will address this and other issues; the new technology is expected to reduce heat production, which will lower the risk of overheating and system failures; although, this has never been officially confirmed by Microsoft.