I found this problem happened on my Fedora 6 X86_64 server.
I have unstall the 64-bit version sarg,
rpm -e sarg-188.8.131.52-1.fc6.rf
then, I install the 32-bit version instead. it request for some packages for like libgd and libXpm, just get the 32-bit version and install before install the 32-bit Sarg