Errors in my log.samba

[Jeff Sadowski]

I get a lot of errors similar to as follows in my /usr/local/samba/var/log.samba

  convert_string_talloc: Conversion error: Illegal multibyte sequence(PØ\D)
  Conversion error: Illegal multibyte sequence(PØ\D)
  convert_string_talloc: Conversion error: Illegal multibyte sequence(PØ\D)
  Conversion error: Illegal multibyte sequence(PØ\D)
  convert_string_talloc: Conversion error: Illegal multibyte sequence(PØ\D)
  Conversion error: Illegal multibyte sequence(PØ\D)
  ndr_pull_error(11): Pull bytes 8 (../librpc/ndr/ndr_basic.c:231)
  convert_string_talloc: Conversion error: Illegal multibyte sequence(¸ÛÑA~)
  Conversion error: Illegal multibyte sequence(¸ÛÑA~)
  convert_string_talloc: Conversion error: Illegal multibyte sequence(¸ÛÑA~)
  Conversion error: Illegal multibyte sequence(¸ÛÑA~)

Is there something I need to set to use utf8 someplace? Is that the issue?