weird indeed. My pdf-viewer in Ubuntu doesn't mention anything about the document being locked, not even while looking at its properties.
Don't worry about it. Pdf's exist in many flavors.

________________________________________
From: Code for Libraries [[log in to unmask]] On Behalf Of Eric Lease Morgan [[log in to unmask]]
Sent: Saturday, October 12, 2013 3:49 PM
To: [log in to unmask]
Subject: Re: [CODE4LIB] pdf2txt

On Oct 12, 2013, at 8:31 AM, Nicolas Franck <[log in to unmask]> wrote:

>> For a limited period of time I am making publicly available a Web-based program called PDF2TXT -- http://bit.ly/1bJRyh8
>
> If you're looking for the pdf in question, search for "IIPv105.pdf" in your log files.
> It is a very simple pdf you can download here: http://iipimage.sourceforge.net/IIPv105.pdf


Nicolas, I was able to process the PDF file, but as I was viewing it from Sourceforge my Macintosh Preview application said that it needed to be "unlocked". I don't know what that means, but I said, yes, do it, and after that processing worked as expected. Weird? --Eric Morgan