Hi All, I tried to upgrade boost 1.34 to 1.37 in ubuntu 7.10 through package manager. At the end of installation it shown an error like Internal Error, Could not perform immediate configuration (2) on libc6 I already removed 1.34 version from /usr/lib and /var/cache/apt/archives. I unable to find where the problem lies. Can any one please help me out. -- Thanks & Regards Bijay