netinst ISO by Blade asking for password

["J.S.Sahambi" <jsahambi@iitg.ernet.in>]

I just now downladed the Netinst boot image from the following location:
http://people.debian.org/~blade/boot-floppies/netinst-full-pre/bootbf2_4_iso.zip


When I tried to unzip it with the command "unzip bootbf2_4_iso.zip", it 
is asking for a password!




$ unzip bootbf2_4_iso.zip

Archive:  bootbf2_4_iso.zip
[bootbf2_4_iso.zip] netinst-full-pre/bootbf2.4.iso password:



As I did not find any email address at the site 
http://people.debian.org/~blade, can any body help me out.

When I downloaded the same file  a month ago from the same location it 
did not ask for any password.

Thanking in advance
JSS