I have been struggling on similar cases regarding teamsite search, with IW, since almost 7 days. I am not getting any response after I did testing as per IW's initial response/ecommendation; which I did couple of days back. I also had Case#1252103 open with IW, but no response since almost 15 days on that, so I opened another case, but no luck so far
When you submit the file, you should be able to view the "submit event received" message in the indexer logs (debug mode) if things from the eventsubsystem part are ok.
Else check the eventSubsystem. Are you using the supported RDBMS. what is the database row count for the 5 eventSubd Tables and entries in the consumer table ?