Hi, yes, this is still an issue, at least w/ the current version in etch. Just try to link this: --- #include <cc++/digest.h> int main() { ost::SHA1Digest d; } --- -- Stephan Suerken <stephan.suerken at 1und1.de> Phone: +49.721.913744-393 1&1 Internet AG, Karlsruhe