I just noticed this file type statistics window for a library directory on my system. The bold totals don't match the suffix sub-totals.

I think the two most obvious mismatches are down to the patterns: "lib*.a", should be Object file, but they are ending up under .a in Other; and ".so.*", should be Shared object but are ending up in under Other (they have all sorts of numeric suffixes after the .so. bit).