Has anyone else experienced data loss in Mavericks? I noticed today that my Alfred preferences were deleted, including all of my custom workflows. I opened Messages to ask my friend (another Alfred user) about it, when I saw that all my contacts were deleted too. What the hell is going on? I'm also noticing some other serious issues: external drives don't show up on my Desktop anymore, my wallpapers keep getting reset, Finder doesn't remember any preferences, etc. Are these Mavericks issues, or is there something wrong with my computer?