I think there may be problems with the images in the pdf. I see images there, but they appear as negatives (black=white, white=black). In fact, the vast majority of the images in the pdf appear this way on my viewer.
OS: Mac OS X 10.5.4 (9E17)
Viewer: Preview v4.1 (469.2.1)
This file was created in Adobe Acrobat with a higher rate of compression so it would be a smaller “web” file. Though the file looks fine on some computers, it appears to provide problems on others. We have replaced this smaller “web” file with a larger file without the weird compression; this seems to solve the problem.
Edit: Well, it at least fixed the problem on Brandon’s computer. It appears Macs & Windows machines should be fine; we will continue investigating issues with Linux.
Update on my end: I tested viewing it with xpdf (instead of evince), and it appears as it should. This may be more of an issue with evince than with your pdf. This was the first time I’ve seen this issue.