http://www.mail-archive.com/[email protected]/msg24903.html * FreeBSD, threads, and worker MPM. All seems to work fine
if you only have one worker process with many threads. Add
a second worker process and the accept lock seems to be
lost. This might be an APR issue with how it deals with
the child_init hook (i.e. the fcntl lock needs to be resynced).
More examination and analysis is required.
Status: Works with FreeBSD 5.3. Does not work in previous versions.
This has also been reported on Cygwin.