I am not sure if it was this exact message, but I also had to fiddle around a little to get java (Sun version, 1.4.2) to work. Turns out it comes with various versions of the plugin: $ ls -l /usr/java/j2re1.4.2/plugin/i386 total 12 drwxr-xr-x 2 root bin 4096 Jun 28 10:11 ns4 drwxr-xr-x 2 root bin 4096 Jun 28 10:11 ns610 drwxr-xr-x 2 root bin 4096 Jun 28 10:11 ns610-gcc32 And this last one, ns610-gcc32 is the one you want for RedHat 9, compiled using gcc 3.2 David Jansen -- David Jansen mailto:jansen@xxxxxxxxxxxxxxxxxx Leiden Observatory ( Sterrewacht Leiden ) P.O. Box 9513, 2300 RA Leiden, The Netherlands Phone: (+31) 71 5275810 Fax: (+31) 71 5275819