If Responder functionality that used to be fast has slowed to an unbearable pace, you may have an overloaded message queue. This problem usually indicates that the rxserver_ack queue has become full of messages. To clean up this message queue and restore your fast-paced Responder, follow these steps:

1. Right-click My Computer and select Manage.

2. Browse to Services and Applications | Message Queuing | Private Queues | rxserver_ack.

3. Expand rxserver_ack to display Queue Messages and Journal Messages.

4. Select Queue Messages. The messages in this queue are displayed in the right-side window.

5. Right-click Queue Messages and select All Tasks | Purge to clear out the messages.