IPC Shared Memory

Hi when i run postmaster i got the following error and
postmaser doesn't start,

FATAL 1: InitProcGlobal: IpcSemaphoreCreate failed
IpcSemaphoreCreate: semget failed (No space left on device) key=8888014,
num=16, permission=600
This type of error is usually caused by an improper
shared memory or System V IPC semaphore configuration.
For more information, see the FAQ and platform-specific
FAQ's in the source directory pgsql/doc or on our

i made query to admin and the max shared mem setting is already
set to the max possible

*
* IPC Shared Memory
*
4294967295 max shared memory segment size (SHMMAX)
1 min shared memory segment size (SHMMIN)
100 shared memory identifiers (SHMMNI)
10 max attached shm segments per process (SHMSEG)

I tried -N and -B but didn't have luck. Could anyone help me on
this? This problem appeared after admin changed their config
i believe, could that be it?

Thanks
Katsu