Hi Ion,
 
I've noticed that the "file" /dev/shmem/sem.boost_shmem_shm_global_mutex keeps hanging around after my program finishes. This file has write permission only for the user that created it. When different user comes along a runs another program that uses shmem, it seg faults on sem_wait(), probably due to the file permissions.
 
Should this global mutex be cleaned up after use? Or could the permissions be changed somehow to let other use it (though probably not a good idea if user A and user B run a shmem based program at the same time).
 
Thanks for your advice.
 
Cheers,
 
 
Steve.