Hi all, Just wanted to give some feedback on my first couple of days using Lion. Don't worry NDA freaks; I'm not going to reveal any mojo. So far Lion is very stable. I have not had any major issues or software conflicts. The only real bug I notice is sometimes the menu bar tends to disappear. It is easily fixed by gesturing to the dashboard and back to the desktop. Finder is heavily improved over SL. Gestures are all over the place. The overall UI experience has been refined and has a heavy aluminum appearance. I installed Lion over Snow Leopard; upgrade style. No issues and took less than 10 minutes to install (on SSD). No issues with the whole Mac App Store process. No data loss, luckily. I would say it is safe to install over SL. My system is a mid-2010 15" HR AG MBP 2.66 i7 8GB RAM 128GB SSD.