I installed iFilter v9 on my 64 bit Windows 2008r2 machine with SQL Server 2008r2 and configured full-text indexing with a FileStream and loaded in a bunch of pdf documents.
Half of the documents appear to be indexed just fine and can be searched with no problems, but the other half only have a few (3-6) words indexed and they all show the display term "krm" as indexed which is not anywhere in the pdfs. I used the function sys.dm_fts_index_keywords_by_documentto verify the terms that were indexed.
When I use the same documents on another machine - this one running 32 bit and iFilter v6, all the documents index just fine. I checked the FDLauncherErrorLog and crawler logs and everything appears normal and show that all the documents were successfully processed.
Has anyone encountered a problem like this or have any other suggestions I can try?