Leopard: how to fix the pdf fonts problem in preview

It appears to be the problem with the corrupted font cache. To clean/fix the corrupted cache,

To delete the ATS cache folder for the current user:

sudo rm -rf `lsof | grep com.apple.ATS/annex.aux \
| grep Finder | cut -c 66-139`

To delete the ATS cache folder for all users:

sudo rm -rf /private/var/folders/*/*/-Caches-/com.apple.ATS

After running this script, the machine should be restarted so that the caches can rebuild.

This solution is from http://www.macosxhints.com/article.php?story=20071026081555971