I'm not sure, they don't mention much about polls in the changelog.
You can have a look here : http://www.phpbb.com/support/documents. ... &version=3
Look in the two categories "Changes since 3.0.8" and "Changes since 3.0.7-PL1", since I upgraded from 3.0.7-PL1.
If knowledge can create problems, it is not through ignorance that we can solve them. Si le savoir peut créer des problèmes, ce n'est pas l'ignorance qui les résoudra.
( Isaac Asimov )