... sort of. As an afterthought to a discussion of the Progress/NuSphere/PeerDirect tussle with MySQL:
"Now he says he is cautious about working with GPL software. Instead, Progress uses an open source database program distributed under the less onerous Berkeley Software Distribution license."
http://www.forbes.com/2003/10/14/cz_dl_1014linksys.html
As the FSF gets more and more ambitious with their GPL enforcement, this further highlights the business-friendly nature of the PostgreSQL BSD license.