Just to correct and clarify my ungrammatical previous posting. It should have read:
I did what you said--changing the 1 to 0 and reindexing. It still doesn't work properly: "versioning" still matches "version". Any suggestions?
I'm assuming your response, "I'll take a look at it to see if it's still working", means that you're checking to see if setting EnableStemming to zero actually turns off the stemming behavior.