So I tried to do a fresh install on my Desktop of the new 12.04 Release. It boots fine from the USB and passes the pink screen but right after I have to select the language the mouse feedback is slow or freezing and I can't click on anything. Sometimes on the upper right corner I get a notification that wireless networks are available. It seems I have a similar issue with this post:
Ubuntu 12.04 install hangs on Dell Latitude D610. Some of the hardware specs: Intel core i-7 980 6-Core Gulftown, NVIDIA GTX580 and a wi-fi card Linksys WMP600N Wireless-N adapter.