I have a problem with disappearing files when using Dreamweaver 8. I have been using DW 8 steadily for four years with no problems, but recently it has developed a behavior of suddenly and intermittently deleting html files when I switch to view the file with another program, like Firefox. First I see a not found error in the browser. I can still see the file in DW. If at that point I refresh my Windows Vista file management window, the file disappears there as well, and it does NOT appear in the recycle bin. My only solution has been to immediately go to DW and re-save the file. But sometimes it happens without me being aware, and I have lost major work for no apparent reason. Maybe this is Adobe's way of telling me I need to upgrade to CS4? I hope not! Any solutions?