So far I have a an amazing experience with the Developer Preview of OS X 10.7 Lion. Everything has been easier to access, snappier, simpler, and most of all, much more attractive. Despite all the wonderful things I can say about it, there are a few bugs so far. When going into full screen with a Flash player (ex. YouTube) the menu bar and dock still show. When quitting a full screen app with CMD+Q the menu bar is missing until I relaunch Finder. Safari sometimes will not allow me to type into text fields. The cursor is blinking, indicating that the field is selected, but no text shows up when I type. Extremely slow boot up times when I have Snow Leopard and Lion on different partitions (no longer a problem as Lion is my primary OS now) Scroll Bars will sometimes not appear when scrolling, and when I try to click and drag them down, whatever app I am in will occasionally crash. Echofon will not boot up, and it was deleted when I upgraded. Windows will shift position upon booting up after the system has been shut down (ex. Safari is centered in the middle of my screen, and it will be really tiny when I boot back up) Launchpad will crash upon changing the name of a folder occasionally. Finder will not always load the icons for favorites (ex. not showing Downloads icon for Downloads favorite" These are just a few problems I've had so far, but more will be posted here if I experience more issues.