go to contacts->options->general options
is the sort by field first name, last name or company.
I'd think that if its last name and there are no lasts names, or company and there are no companys that is why you cant find them.
if it is first name and it dont work..not sure.
"That's it then. Cancel the kitchen scraps for lepers and orphans, no more merciful beheadings... and call off Christmas."