I have a copy of Returnil, version 3.0.6517.4958. Today, when I was looking for excessively large files that I could delete, I came across the file Rvsystem.img in the directory C:\Documents and Settings\All Users\Application Data\Returnil on WinXP Pro SP3. The file was 1 GB in size. Why should there be so large a file with today's date when I haven't used Returnil in a while and have set up only a very small virtual storage area within Returnil? What would happen if I delete this Rvsystem.img file? Thanks in advance for your help.