Forum Spam and advertisements

Recently there has been an increased number of spam activity in our community, which will surely make a negative feeling to users and visitors. Today I had to flag 3 posts as spam to higher levels. Whats going on? Is this because all the Norton world wide forums have been integrated to a single place? ( also some posts for help from non english come to english ) Before the migration, there was no such issues AFAIK. Admins and spam nanny, please take it serious.