I have found that my file associations for graphics files have changed. Things like JPG and GIF files used to open with MS Office Picture Manager, but that changed to Windows Picture and Fax Viewer without my having chosen to change it. The only change I have made to the PC recently is to download and try IE7 Beta 3. Would installing that have changed my file associations gratuitously? (I know how to change them back, of course, but I was just wondering why it happened.)