All, You are probably having the same frustrations I did. I'm also running Mandrake 9.1 and had issues as well. As I tried installing nessus, I'd come across errors that "neither lex nor flex are installed..." and all the rest. I searched the web and installed the following:
gtk-2.2.2 gtkdev-1.2.6 atk bison glibdev-1.2.6-1 tiff-v3.5.7 pango 1.2.4 gimp 1.3.18 (you NEED the dev versions mentioned above) after all these were installed, I finally got nessus to install and compile. I managed to start nessus: $nessusd -D and (took me forever to figure this out) started the console (the manual doesn't say how) $nessus I had to create a certificate just so my windows client would connect. I still have a long way to go for configuring and using, but it is running and functional. HTH
