[Techtalk] PDF text issues

[AstroGirl]

Hi everyone!

I've searched and searched and I just can't get an idea of what is going wrong 
with a few PDFs I'm trying to view. The funny thing is, they were working 
before.. eek! So, here's the problem.

I can mouse-over the problem PDF file on my desktop, and the preview shows the 
text. That's all good. (See: 
http://s267.photobucket.com/albums/ii301/manda79au/?action=view&current=preview-1.jpg)

When I open the same PDF in xpdf I get no text. Not so good. (See: 
http://s267.photobucket.com/albums/ii301/manda79au/?action=view&current=actual.png)

Same goes for Kpdf (which I know is based on xpdf), and Konqueror too. (See: 
http://s267.photobucket.com/albums/ii301/manda79au/?action=view&current=actual1.png)

Now, the funny part is, if I select an area in Kpdf, and copy the "text", I 
can paste the text into an editor, and yes, the text shows up just fine! It's 
like the text is there, but invisible.

I've clearly messed something up! Any ideas?

AstroGirl