An established connection was aborted by the software in your host machine

[borer richard]

hello,
I've got some problems with the latest .net connector version.
the framework .net generate an exception when the application not run
for a long time:
An established connection was aborted by the software in your host machine 
Description: An unhandled exception occurred during the execution of the current web
request. Please review the stack trace for more information about the error and where it
originated in the code. 

Exception Details: System.Net.Sockets.SocketException: An established connection was
aborted by the software in your host machine
Anyone got an idea ?
Thanks in advance