On the "File Sizes and File Counts" summary page, in the File Types table, C++ files with .C or .H extension are counted as "Others".
This is due to the extensionPattern in FileTypeReport.java. I've fudged
it here using the following regexp:
This matches *.C, *.H as well as the current lot of file extensions.
(PS: I don't particularly like the .C and .H file names, which GCC recognises as C++, but we've inherited a project that uses this convention.)