odd password counts with john

[dninja at gmail.com (Robin Wood)]

Hi
I'm trying to crack a file of windows cache passwords grabbed with
fgdump using john and getting odd counts:

$ wc -l /tmp/cache/sorted_dump
37 /tmp/cache/sorted_dump

$ ~/src/john-1.7.3.4/run/john --wordlist=all_combined.txt /tmp/cache/sorted_dump
Loaded 70 password hashes with no different salts (LM DES [128/128 BS SSE2-16])
guesses: 0 ?time: 0:00:00:00 100% ?c/s: 261994K ?trying: ZYZ - ZZZZZZZ

$ ~/src/john-1.7.3.4/run/john --show /tmp/cache/sorted_dump
0 password hashes cracked, 74 left

wc says there are 37 entries in the file
john loads and says it is cracking 70 passwords
john show says there are 74 left to crack.

Any idea what is going on?

Robin