On my laptop computer when I am away from my office, I frequently "print" PDF files to my office printer, so that they will be printed when I bootup at the office the next time. Most often this work fine, but fairly often I get garbled text such as the attached.
Note that the line "Chapter 2" is legible (and correct), but the rest of the text is garbled except for the page number at the bottom. For the page number, however, both digits are incremented by 1, which is a common symptom when I get a garbled page like this (however, the 2 in "Chapter 2" is correct, in this example).
Interestingly, when I use FireFox, the problem never occurs. My preference is to use Adobe Reader, however, so I hope this problem can be corrected.
It seems that the problem must be particular to certain fonts.
The example PDF file can be found here: http://stephenschneider.stanford.edu/Publications/PDF_Papers/Ch02Clima tePolicy.pdf