Norton locking .exe file created by Visual Studio

I'm trying to develop an application using Visual Studio 2010 but Norton 360 keeps locking the executable file every time I build it. Which means I can't re-build my solution until Norton has released its lock - takes minutes.

 

I have added my Visual Studio output directory to the Norton 360 exclusion folders but still it happens.

 

I've tried disabling auto-protect and turning on silent mode but I can see from using Process Monitor that ccSvcHst.exe is still getting its hooks into the newly created .exe file.

 

How can I stop this from happening?