I could finally fix that 'bug' myself.It was indeed my mistake. I'm working with GCC4.4 svn and installed it in /usr/local. OOo, instead of using the straight /usr/lib's libgcc_s.so.1, used the unstable /usr/local/lib's one. Everything went back to normal once I uninstalled GCC4.4 svn.
Unless this is a wrong behavior of OOo, the bug report can be safely closed. I apologize for the inconvenience. Regards.