cocktail dresses 2011

Stunning short cocktail dressSuAndMacMar 4, 07:21 PMI have been working on a magazine for this whole week (Quark Xpress v6) and finally got it signed off yesterday. Shut down the computer and had a well earned drink. When I turned on the computer this morning the document has reverted back to last Tuesday! (meaning a lot of lost work). Would this have anything to do with changing permissions? (I