Recent Global Posts widget showing most recent edited post not most recent created post

Recent Global Posts widget showing most recently edited post not most recently created post. so if someone goes in and updates 10 old links on several posts in the sub site then all that old stuff is now displayed on the network homepage. Both recent post widgets do the same thing so I assumed it was the post indexer plugin. How do I get it to work again, or I am guessing fix the tables it uses.