Sudden Password Protect problem

[rvchuck]

I have been using the password protect script for some time and it has worked perfectly till now.
Of the 30 or so login,passwords I have, suddenly 4 don't want to be accepted.
They are in no particular order.  I have reuploaded the script with no change.  These were working before for several months with no problem.
Any ideas?  Thanks

[zubrag]

Resolved. For those who experience similar issue: make sure logins are unique.

For example following will not work:
'ben'=>'kitaro',
'ben'=>'green'

You'll have to change case of some letters, or add index. Like this
'ben'=>'kitaro',
'Ben'=>'green',
'ben1'=>'test',
'BEN'=>'password'