I think the regressions for thread and wave libs in the 1.33.1 branch can be removed quite easily if the Jamfiles for these tests stopped using <runtime-link>static. Anyone know if there was/is any rationale for this? The problem is that some platforms either don't have a static-runtime option, or it may be "optional". For example these tests all fail on my Mandriva Linux box because there are no static runtimes supplied. Other Linux versions may supply them, but as can be seen from the regression test results they sometimes cause more trouble that they are worth. BTW, just because the Boost libs are linked statically this does not imply that the runtime must be statically linked (just in case that was causing any confusion). Thanks, John.