Assemblies listed twice in performance or coverage output
Set the following environment variable:
NM_NO_UNREF_ASSM_INFO = 1
If you are profiling from the command line, using the 'set' command before profiling you application will suffice. However, if you are profiling from within Visual Studio or are profiling a .NET Service, you will want to set this us a system environment variable through Control Panel | System | Advanced.
NOTE: If you are profiling under NUNIT unit testing software, please refer to the knowledgebase article titled 'Using Performance and Coverage Analysis with Nunit unit testing software' for additional information.