ndeleted in system.profile documents reports 1 too few documents removed

for ( var i = 0; i < 1000; ++i) {db.rmtest.insert({_id:i, s: "s_" +(i%100)})} db.setProfilingLevel(2) db.rmtest.remove({s: "s_0" }, true ) db.rmtest.remove({s: "s_0" }, false ) db.rmtest.remove({s: "s_1" },{justOne: true }) db.rmtest.remove({s: "s_1" },{justOne: false }) db.rmtest.remove({s: "s_2" },{justOne: true , writeConcern:{w: "majority" ,j: true }}) db.system.profile.find({ns: "test.rmtest" }).pretty()