Web Agent stops abrupt

Hi,

We have a webagent to perform a task and it is used very frequently by users. When this is run over a period of time, it stops working and not accessible and 1100 calls to the agent.

All the task in the server is running and no crash. Even the http task is accessible.

When we try to do a http Quit alone, we get the following error :

HTTP Server: Agent ‘Agentname’ error: Notes error

Entry not found in index (FormName)

Pls suggest.