This was advice that was given to me from someone on this forum and it worked fine. Red Hat uses UTF-8 in the local evnvironment and Acrobat Reader doesn't like that. So you can either change your environmental variable globally, but then lose the advantages of UTF-8, or have Acrobat just change it when called up temperarely.
Open the acroread file (found in /Acrobat5/bin) in a suitable text editor (I use vi) and right under the first entries without the #..where it tell the version number and install directory, add:
And you are all set! If you installed anywhere other than /home, you will have to su to root for writing priviledges on that file. Also, make a link in your path so that you can call it up with a command or make a shortcut icon on your desktop.
Second, put COPY the approprieat plug-in file to your Mozilla plugins directory.
I have found the operation flawless and quick.
Hope this works for you!