HELP I'm in crisis

Hello, System: HP HP9000 E35, 132MB RAM, Online 7.12.UC3 These are my NEW Shared Memory Parameters: LOCKS 2000 # Maximum number of locks BUFFERS 30000(old=5000) # Maximum number of shared buffers NUMAIOVPS # Number of IO vps PHYSBUFF 32 # Physical log buffer size (Kbytes) LOGBUFF 32 # Logical log buffer size (Kbytes)LOGSMAX 6 # Maximum number of logical log files CLEANERS 6 # Number of buffer cleaner processes SHMBASE 0x0 # Shared memory base address SHMVIRTSIZE 60000(old=8000) # initial virtual shared memory segment size SHMADD 8192 # Size of new shared memory segments (Kbytes) SHMTOTAL 0 # Total shared memory (Kbytes). 0=>unlimited CKPTINTVL 300 # Check point interval (in sec) LRUS 12 # Number of LRU queues LRU_MAX_DIRTY 70 # LRU percent dirty begin cleaning limit LRU_MIN_DIRTY 60 # LRU percent dirty end cleaning limit LTXHWM 50 # Long transaction high water markpercentage LTXEHWM 60 # Long transaction high water mark (exclusive) TXTIMEOUT 0x12c # Transaction timeout (in sec) STACKSIZE 32 # Stack size (Kbytes) I've migrated from Informix-SE 5.04 to Informix-OnLine 7.12.UC3 With SE, the system was slow, but I never had problems. Now After 20-30 users are using the system(with the same client/server application) OnLine adds new shared memory segment (size 8388608) continuosly!!! After some hours, the system "sits" down and I need to take OnLine OFF Line. I'm taking the OnLine 7.12 "on-line"with the NEW above values. I've change BUFFERS from 5000 to 30000 and SHMVISTSIZE from 8000 to 60000. It seems that the application that was running OK on SE, now does not release memory until it doesn't disconnetcs from the Database engine....Why???? Are my new parameters ok? I've got 30 users complaining !!!!! HELP!!!! Please help. I'm doing this installation away from my office. fernando.collalti@orbit.net