I just installed 10.6.2. After reboot I immediately noticed that the Dock icons looked not as sharp or crisp, but very subtle. Also the letters in all the Applications look slightly fuzzy. I always have the resolution set to 1600x1000 on my 24" Apple LED Cinema Display. Changing the resolution to 1920x1200 fixes the problem. Never had this problems on 10.5.x or on 10.6.0/10.6.1.