Can not create resident segment

Hello alls, I have posted this problem since last week and get no response. But the problem still occur. My server can't create resident segment after a long period of working. When I look into online.log file. It says "shmget:[EEXIST] shared memory already exists mt_shm_init: can't create resident segment" Is there anyone out there have some experience look like this. Pls tell me your solution. I am also appreciate if you can descibe about Informix mechanishm that causes my problem. Thanks in advanced, Manote N. manote.n@cdg.co.th