Forum roundup: Mobile Me web hosting questions are a recent topic of interest in the MacNN forums. A discussion about Lightroom 2 stability and performance compared to Aperture can be found in this thread. Mac Enthusiast lenox recently got their 20-inch iMac, noticed some graphical glitches and looks for advice from other forum goers. In this thread members discuss the differences between Dual-Core and Quad-Core Intel processors in the Mac Pro. Many forum members have been reporting that the iPhone is unstable with large contact lists and converge here to discuss possible solutions.