Intraday postings causing double postings

We are currently on PeopleSoft 9.2, Image 39. We have intraday general postings that occur every few hours in our application. It has happened a few times where a user uploads a journal while the system post is running. This has caused lines to double the amount on the ledger. Some of the lines post while the first post is running and then all of the lines post again the next time the post runs. These are entries that have interunit lines creating as part of the post.