I recently installed Ubuntu 12.10 64bit on my notebook with Intel Pentium Dual-Core T4500 2.6 GHz, Intel GM45 Express Chipset integrated (i915 kernel module), and 6GB DDR3 1333MHz RAM, with all drivers up-to-date from the Xorg-Edgers repositories. Everything seems to run perfectly, the Unity support test results on the terminal all values 'yes'. The only problem that occurs is a lag when using the Unity Previews, only during the time of zoom. I wonder if this problem is with my hardware or perhaps a bug in Unity. Thank you in advance.