Netscape .pdf-plugin

I have a problem opening .pdf-files from Netscape. The .pdf-plugin for Netscape (nnpdf.so) doesn't work anymore. It used to work right after the system installation (SuSE Linux 7.3). I have since updated the system with YOU. I have tried reinstalling both Netscape, the Netscape plugins and Acroread. That didn't help. I get a message saying "Could not load the plug-in 'nnpdf.so' for the MIME type 'application/pdf'. Make sure enough memory is available and that the plug-in is installed correctly. The system has 768 MB memory, and there is plenty available! How come this problem suddenly occurs? Best regards, David List