That's probably because you copied the code from my home node yesterday. I had binmode in the wrong place (after undef $/, not a good thing) and one thing probably lead to another. Is this what you have?
#!/usr/bin/perl

open(IMG,'foo.gif') 
    or die("Couldn't open image: $!\n");

binmode(IMG);
undef($/);
$image = <IMG>;
$hex = unpack("H*", $image);
close(IMG);

while ($txt = substr($hex,0,32,'')) {
    print "'$txt'\n";
}

[download]


#!/home/bbq/bin/perl
# Trust no1!

In reply to RE: RE: Hex Embedded Images by BBQ
in thread Hex Embedded Images by BBQ

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