After having not used my computer for about a month, I came back to find that FF had updated itself to version 5 (and then 6, after restarting several times trying to fix this issue), and all my old profiles were seemingly gone. Everything. Not just bookmarks; history, settings, and extensions too. After some searching, I found the files for them in my User/Appdata/Local/Mozilla/Firefox/Profiles folder, but trying to restore them by creating a new profile with the manager and pointing it to the older folder turns up nothing. I'm currently using one of those profiles, and of course, all of my settings and whatnot are gone. What happened?