Results at fast-food giant McDonald’s Corp. (NYSE: MCD – $96.13) disappointed after established restaurants in its struggling U.S. division turned in a third straight quarterly sales decline and results from Europe also logged a surprise drop, especially in Germany.The Asia/Pacific, Middle East and Africa region’s same-store sales rose 1.1%, just below expectations for 1.5% growth, which reflects strong sales performance in China, as well as positive performance in many other markets. However, continued weakness in Japan weighed on results. Profit for the second quarter fell 1% as the fast-food giant continues to struggle to connect with customers; a trend the company indicated isn’t likely to improve soon.Overall, McDonald’s reported a second-quarter profit of $1.39 billion, equal to $1.40 a share, compared with $1.4 billion, or $1.38 a share, a year earlier, thanks to a lower share count. Revenue rose 1% to $7.18 billion.Analysts had expected earnings of $1.44 a share and revenue of$7.29 billion. Although challenges for McDonald’s remain, management is increasing efforts to modernize restaurants, expand internationally, buy back shares and improve menu options and service. For now, I am maintaining my McDonald’s position in the income portfolio with a 3.3% yield.