Is it possible that a vote can be casted more than once via refreshing or is another method used to cast multiple votes?

I ask because one of my sites was subjected to vote tweaking and I used Survey 3.3 with cookie tracking and DNN 4.4.1.

Pressing F5 with member based voting will cast the vote again.

I looked at it again and it's a bug. To fix the problem. log in as Host, go to SQL and enter this in the box and click the execute link (this will be in the next version but it wont cause a problem when you upgrade):

ALTER procedure AddSurveyResult

@SurveyOptionID  int,
@UserID          int

as
DECLARE @i int
Set @i = (SELECT COUNT(*) AS records FROM SurveyResults WHERE  (UserID = @UserID) AND (SurveyOptionID = @SurveyOptionID))

/* If the rating does not already exist insert it */
if (@i = 0)
begin

update SurveyOptions
set    Votes = Votes + 1
where  SurveyOptionID = @SurveyOptionID

insert into SurveyResults ( SurveyOptionID, UserID )
values ( @SurveyOptionID, @UserID )

end