mfkilgore,
After the index fails, can you right-click on your project go to Maven4MyEclipse > Add Dependency and then type in a filter of “log” and see if the list updates with anything?
I’ve seen the index update fail when write permissions weren’t allowed or when an existing read-lock was on the file, but it usually self corrected with the next restart… I’ve not ever seen it fail time after time after time