problems installing postgre

Dear Sirs,

I'm installing Verity K2 Dashboard (with postgre integrated) and get error messages during the postgre installation part:
IpcMemoryCreate: shmget failed (Invalid argument) key=5432010, size=144,
permiss
ion=700
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
web site at http://www.postgresql.org.
IpcMemoryIdGet: shmget failed (No such file or directory) key=5432010,
size=144,
 permission=0
IpcMemoryAttach: shmat failed (Invalid argument) id=-2
FATAL 1:  AttachSLockMemory: could not attach segment

Our shared memory segment size is 4 MB,
our OS Sun/Solaris 5.7

Please can you give me some advice?

Best regards,
Johannes Heinz