I was working with 2 event handlers and wanted to make sure I removed them before creating any news ones, so that multiples were never created.

The code I used has been simplified but was similar to:

// To unbind both events before creating new ones
$(this).unbind(".jpRepeat.jpNext");

$(this).bind("someEvent.myProject.jpRepeat", function () {
  // Repeat
});
$(this).bind("someEvent.myProject.jpNext", function () {
  // Next
});

This was not removing both the events through the namespace. It was removing neither.

Changing it to this worked:

$(this).unbind(".jpRepeat").unbind(".jpNext");

Reading the docs suggests that both ways should have the same effect.