Yes, it's the entire novel and is on phones, backup discs in the US and the UK and even my GPS has a copy. I'm registered with the Library of Congress and even chant evil spells to deter plagiarizers, but I just want computers to stop playing nasty tricks on me.
I guess it must be encrypted and there is just a chance a lifelong pal asked for his copy to be on pdf, and I protected it as it was the entire book before going public. Then, I copied the locked pdf and perhaps kicked out the open one.
If so, I've only myself to blame though the end of my time in Texas I was in a rather numbed state so having blamed Adobe and computers it's probably my fault. Usually is.
I did fire up my Vista machine and it had a copy of Adobe X on it, and I was still asked for the password so it might be the file first became locked at the moment of trying to open it. Could be either a new or old problem that had never been picked up. Anyway, I'll look at some of the programs above. .