duplicate customer bug

bug details:Steps to reproduce: Turn on the prevent duplicate customers switch in system prefs, First enter customer Paula Jones and save Second create customer Paul Jones (paul gets flagged as the duplicate customer) this happend with the client with michaelanne Kane (1st cust entered) andmichael kane (2nd) Order matters in this bug in my testing if I entered Paul or Michael first andthen entered Paula or Michaelanne it accepts it. it is ignoring the characters of the name. I gave the work around of either turning off the system pref or making each cusomter name different with a space and the middle initialanswer book and blogged