VB6 COM+ objects Call time is increasing suddenly and application is hanging

Hello,

In our project to the existing COM+ application we have referred .NET dll which is designed to consume ESB web services.And the COM+ components were deployed into 3 app servers in production.

The issue is : Application running for few days fine but then all of sudden Objects count getting increase and the application is hanging.And this behavior is happening in any one of 3 servers.For suppose first time in app 1 server and later when it is hanging in another server like app 2 server.

Can any one suggest why it is happening?

Note: Issue is not reproducing in DEV & TEST servers.