I have 40.9 gigs of music and about 5700 songs.
None of the artists matches a > 100 songs but here are the most popular:
43 tracks - DJ Promo
41 tracks - The Prophet
36 tracks - Angerfist
31 tracks - Dione
25 tracks - Neophyte
And there's a > 100 one after all, but I guess that doesn't count;
123 tracks - V.A.
[edit] Thread moved over to a more suitable forum btw.