Hello all, My question is concerning the Boost installation process. I am currently working on a machine that has Ubuntu 8.04 LTS. I have downloaded the latest copy of Boost (1.41.0) and am trying to successfully install it. I have followed the procedures for building the libraries such as Filesystem / Regex / Thread / etc. using both the bootstrap, "easy", method and the "build custom binaries" method. I'm using Eclipse as my C++ development environment and I can create programs that use the Boost headers (the ones that do not require compilation - ie. Lambda) just fine. When I try to implement the sample program that incorporates [regex], I am able to compile and link just fine. I've set the include directory to ( /usr/local/boost_1_41_0/prefix/include - prefix was just the name I gave the folder), the library search path to ( /usr/local/boost_1_41_0/prefix/lib ) and the library I wanted to link to, [regex], using (boost_regex - I have also tried boost_regex-gcc##-mt ). As I said though, when I try to run the program, I get the result: ./boost_regex_test: error while loading shared libraries: libboost_regex.so.1.41.0: cannot open shared object file: No such file or directory I have not specified that I was using shared libraries, so I do not understand why it is trying to look for them. If anyone could please clarify why this is happening, I'd be more than greatful. Just as an aside, I also tried downloading and installing Boost from the Synaptic Package Manager that comes with Ubuntu 8.04. I'm able to use all of the libraries when I do this, but I'd rather not because the version of Boost is 1.34.1 (quite archaic) and has cause problems because member variables have evolved and some no longer exist. Thanks again for any and all help.