I think this current problem has nothing to do with hardware. I've been using EN since 2010 (on an older laptop) and have slowly accumulated over 1000 sometimes large notes including ALL my notes while working on a graduate degree, but never had this Not Responding problem before. It only started when with the latest upgrade, which (perhaps not coincidentally) corresponded with my upgrade to Pro. I'm using a Dell M4700 workstation with 32GB or RAM, and an SSD, so if it takes even more power to run EN smoothly, then this is a very flawed program. Can anyone post a link to an older, working version of EN? I don't know what functionality was supposed to have been improved in the latest upgrade, but I'm sure I can do without it. Evernote developers, owners, or anyone who cares about your reputation: are you watching this? Can we cut through the upgrade > reinstall run-around and fix this? Microsoft OneNote is starting to look really appealing.