Please upgrade to 2.2 here.
The 2.0 and 2.1 branches are no longer being updated.
Multiple votes on same question by a user,Bug or Feature?
This discussion is related to the Voting
I was testing the plugin and noticed that I could actually place multiple votes on same discussion/question/answer, is that a bug that or just a feature . Great plugin by the way!. Hopefully the Oauth will be available soon.