Hi, I am able to compile a program of mine with gcc 3.3.4 with absolutely no problems, but when I compile it with gcc 3.4.3, I get this issue. Is there something I need to do when installing the boost library to have it use libstdc++.so.6? c++ -I. -I. -I/usr/include/libxml2 -g -O2 -c testActivity.cc c++ -g -O2 -lboost_date_time -lssl -o testActivity Activity.o testActivity.o /usr/lib/gcc/i686-pc-linux-gnu/3.4.3/../../../../i686-pc-linux-gnu/bin/ld: warning: libstdc++.so.5, needed by /usr/lib/libboost_date_time.so, may conflict with libstdc++.so.6 /usr/lib/gcc/i686-pc-linux-gnu/3.4.3/../../../../i686-pc-linux-gnu/bin/ld: `.gnu.linkonce.t._ZN5boost10posix_time16to_simple_stringENS0_5ptimeE' referenced in section `.rodata' of testActivity.o: defined in discarded section `.gnu.linkonce.t._ZN5boost10posix_time16to_simple_stringENS0_5ptimeE' of testActivity.o Thanks, Curtis