Oddly enough, I have been using build 40 pretty much since the day it came out, but suddenly today I started having this issue. I installed do-pdf ver7 and it started immediately after that, so that has to have something to do with it. If you're not familiar with it, do-pdf is a freeware util that just makes it easy to print to pdf.
HP Laptop
Windows XP MCE
BeerSmith 2.0.40