Check the Web Connection error log and see if there's something in there around the same time as those faults.
On a dev machine a lot of things can go wrong though - components getting recompiled while app is trying to access it etc.
Also, on Windows 7/2008/8 it's often better to run the .NET Managed Handler which is more robust.
Hey Rick;
Any idea why I am getting messages like this a few times an hour in the Event Log?
Faulting applicationname: w3wp.exe, version: 7.5.7601.17514, time stamp: 0x4ce7a5f8
Faulting module name: wc.dll, version: 5.60.0.0, time stamp: 0x4e9e6560Exception code: 0xc0000417
Fault offset: 0x0000faae
Faulting process id: 0x17dc
Faulting application start time: 0x01cdcf4f73acbe26
Faulting applicationpath: C:\Windows\SysWOW64\inetsrv\w3wp.exe
Faulting module path: \\?\C:\inetpub\wwwroot\CondoNavigator\main\bin\wc.dllReportId: 214a9f89-3b43-11e2-a7c7-386077ebf13d
This is running on a Windows 7 PC 64 bit.
Bob