Where does VS 2010 Tools' gacutil.exe install assemblies?

I used the Visual Studio 2010 Command Prompt's gacutil.exe to install an assembly. I expected the assembly to be added to C:\WINDOWS\assemblies, but it was instead added to C:\WINDOWS\Microsoft.NET\assembly\GAC_MSIL and is not showing up in C:\WINDOWS\assemblies. Is this a prob开发者_运维技巧lem and should I be concerned that it's not showing up there?

The GAC location was changed in .Net 4. Check .NET 4.0 has a new GAC, why? for details.