Mac OS X 10.6.7 with Firefox 4.0 / Acrobat X Pro 10.0.3
After installing Firefox 4 I was told that the PDF plug-in was no longer compatible and that Firefox was unable to find an update for the plug-in. I cannot believe this to be true but was unable to locate a new version. When finding a PDF-document in Firefox I would like to open it in the browser without the need to downlad the document. Under Windows the Adobe PDF Plug-In "Adobe Acrobat 10.0.1.434" is compatible and PDF-documents are opened showing (application/pdf-Objekt) in the tab, just as it looked with Firefox 3.6 on the Mac.