Why are binaries/executables so large on Windows?

[rpgfan3233]

Some thing as simple as:

void main ()
{
}

generates a 75kb executable with dmd 1.018 using the following line:
dmd -O -release test.d

Does anybody know why this happens? The one thing that prevents me from using D is the large size of the generated files.

Here are the sizes of the files generated by the compiler:
test.obj - 395 bytes
test.map - 2390 bytes
test.exe - 76828 bytes

Is Microsoft's OMF naturally large? Are runtime type checks to blame?

If anybody could help or explain this to me, it would be greatly appreciated.