Hi, I have used boost message queues to setup IPC between a command client and a server on Linux. The client is a command which sends the command options and the server fetches the data and sends it to the client. The client prints the output received from server on the console. The data sent from the command is small but the data sent by the server to the command is huge(~11Mb). Server need to send the data to multiple command clients simultaneously as it is common to execute commands with different options at the same time from different terminals. The commands take quite some time to complete as the data sent from the server is huge. So more than one command running simultaneously is common. I do not see data missing when only one command is executed at a time. But when I execute two commands simultaneously, it seems that the data addressed to the two commands gets interleaved. I need to make sure that data addressed to multiple command clients is not interleaved. Only data addressed to that client should be received by a client. Since the same boost message queue with the same name is used for all the command clients, how can this problem be addressed. I read that Windows Named pipes handle this problem inherently . Could this be a problem with my implementation or is this a limitation of the boost message queues? Please let me know if you need more details Regards, Rohini Chandra