Yes Thanks for that mellis ,I assume its David.
Ive tried a multitude of avr-gcc including avr-g++ and avr-g++ separately .
With that message the answer is there somewhere obviously with avr-g++. But it ain't clear yet .
Recompiling avr-gcc-4.3.3.1 fc10.src takes an hour I also have conpiled and tried gcc4.3.1/2 and 3 and have installed everything offered by Mandrivas repositories updated by URPMI so there's no more .
As I said above I suspect this is to do with the Java version not finding the library or perhaps avrdude itself. But well see ,I'm going to get Fedora11 installed on a machine and see what happens there .
However I suspect you will see a few more of these posts with the same error . Wish I could say how to fix it but I can't yet .