fetch(1) vs browser download fails comparison

[Kenneth W Cochran]

Hello:

How might a file retrieved/downloaded by fetch(1) differ from the
same file downloaded by a web browser (in this case mozilla &
firefox)?  Specifically, if I download the free version of
ZoneAlarm for Windows (about 10mb) by each of these methods, I
get the file(s) and they're both the same length, but they fail
comparison, both by cmp(1) and by differing md5 hashes.  As a
counterexample, fetching OpenOffice (some 80mb or so) works fine
& hash-verifies correctly.  This same behavior is with both
4.10-stable and 5.4-release.  Ideas?

Please cc me any replies.

Thanks,

-kc