Thunderbird was downloading new email after opening program when it crashed before finishing. A screen came up saying something like it encountered a problem and was sending crash info and would reset the computer. After the reset, I went back to Thunderbird, but it was setting up as if I have just loaded the program. I reentered my email account set up for one of my accounts and it downloaded two weeks of emails. All my old stuff was gone: emails, filters, addresses, file structure, etc. I looked at the profile folder in appdata and the only profile was this new one that just set up (I had three profiles set up). When could my profiles have gone? I've looked in the Recycle Bin - not there. I migrated to this computer in March, so I can probably find the original profile names. How and where to search? Thanks, mandaemr