DOS mode in Linux Gnus?

I've been a long-term user of Gnus on Windows, and I've just moved back
to Linux.  I copied over my .gnus, parts of my .emacs, and all of my
Mail folder, and it mostly works.

While I can reply to messages just fine, I've noticed two strange
things:

When I compose a new message, it ends up in DOS line ending mode, as
  the mode line says

                                -=(DOS)

  It doesn't seem to do that if I reply to an existing message.

When I read a message, I sometimes (always?) get an error that says

    Args out of range: 0,  31

  and sometimes Gnus displays the message starting at the end rather
  than at the beginning.

  Here's a snippet from *Messages*, which suggests to me that BBDB may
  be near the center of the problem:

    Retrieving newsgroup: gnu.emacs.gnus...
    Fetching headers for gnu.emacs.gnus...done
    Generating summary...done
    Parsing BBDB... (reading...)
    parse-bbdb-read: Args out of range: 0, 31
    Parsing BBDB... (reading...)
    parse-bbdb-read: Args out of range: 0, 31
    Parsing BBDB... (reading...)
    parse-bbdb-read: Args out of range: 0, 31

  and, indeed, BBDB doesn't seem to show up in its third pane in Gnus as
  it did on Windows.

Any ideas what to look for to fix those two problems

Thanks,

Bill
--

-- 
Bill Harris                      http://facilitatedsystems.com/weblog/
Facilitated Systems                              Everett, WA 98208 USA
http://facilitatedsystems.com/                  phone: +1 425 337-5541