>>After running NETSTAT -ano I see the TCP 0.0.0.0:80 (port 80, right?) has PID 2032. In the Task Manager I find out that this PID belongs to STATION.EXE. I have no idea what STATION.EXE does but would like to know why it uses port 80. This port is supposed to be used by the default web site (which causes a problem).
>>
>>TIA.
>>
>>Update. Never mind. The customer made some change and the STATION.EXE now is not using port 80. Everybody is happy.
>
>This problem came up again. At some point my ASP.NET application stops and the default web site starts (without anybody manually doing it). When I stop the default web site and try to Start my ASP.NET application site I get message that "The Process cannot access the file because it is being used by another process". Again I check the NETSTAT and find out that port 80 is being used by STATION.EXE service. Last time the customer had to reboot the server to get around this issue. But why does it happen? What does STATION do? Any suggestions?
>
>TIA.

Dmitry, Google for "station.exe" and you will find various links explaining what it is and perhaps there will be some useful info to resolve this problem.