boost::shared_ptr and atomic_count_linux.hpp

Hi, I'm using boost version 1.27.0 on an x86 linux platform and have just upgraded my kernel to 2.4.18. After the upgrade, boost::shared_ptr fails to compile because functions such as "atomic_inc_and_test", "atomic_dec_and_test", etc.. which were previously defined in "atomic.h" are no longer defined there. I can get around the problem by using an older "atomic.h" or by using pthreads, but I was wondering why those functions were removed from the header. Any ideas? Thanks, Jerry jnapoli@iteamsolutions.com [Non-text portions of this message have been removed]