knc1: thanks for help
zeb: try knc1's advices.
Also check variable with shared libraries paths or use ldconfig as mentioned
For example look here:
http://www.cyberciti.biz/faq/linux-s...-library-path/
And try to run Fastboot-GUI over strace:
strace -o outFile ./Fastboot\ GUI
in outFile will be seen paths, where libraries are loaded from
(and other things).