As many of you know, the AdobePDFViewer.plugin can be very slow the first time you view a PDF in Safari. It sometimes takes minutes to open a PDF the first time. After that it opens them almost instantly. I know that I can remove the AdobePDFViewer.plugin to make PDF display as is, but I would prefer NOT to do that. What I have noticed though is that I can upload the SAME PDF to two different web hosts, and one opens instantly as it should, and one opens very slowly the first time. I have also noticed that on most sites, it works fine (ie Amazon.com). This is very repeatable. I even looked at the HTTP responses from the two hosts, and they look almost identical, except for the version of Apache. The older version of Apache (1.3.37) seems to cause the plugin to open the files immediately. The newer version of Apache (2.2.3) seems to get stuck. I know this is an Adobe issue, but since I have people who view my site using Safari and have the plug in installed, I would like to get this resolved. Any suggestions (besides removing the plug in)?