BUGME February 2011 Mac OSX does not use multithreading, silently ignoring it so as to work. It does not support unnamed semaphores so another synchronisation primitive will be required (named semaphores or other). There have been rare reports of corruption on decompression of files >20GB. The cause remains unknown so caution is recommended, and not to use lrzip for mission critical massive file backups. Checking files with md5sum is recommended till further notice.