I have a problem where a MAC that has been configured to access data files from a Windows 2003 server automatically deletes an excel file when opened in Office 2008 (SP1), patch 12.1.5! It's a very strange problem. The user gets a warning that "This workbook contains content that is not supported on Excel 2008 for MAC." and to View the unsupported content, open as Read Only. The user does this, makes no changes, goes to close the spreadsheet and then it says "Save" "Don't Save". They choose Don't Save. When they do this the Excel spreadsheet disappears from the filesystem! In its place is a file called ._jobsheet_008_v2.xlsx alias Anybody every come across this odd behavior before, I can't find anything on google? Thanks Shaun