Be careful using Apache POI 3.1, 3.2, 3.5

```
Although Textmining is source compatible, and will work, make sure you
rejar it, as POI developers broke binary compatibility. You'll get a
NoSuchMethod error while invoking getRoot() of POIFSSystem.

This is not a TextMining bug, but it's worth knowing
```

Original issue reported on code.google.com by `mikebel...@gmail.com` on 16 Jun 2009 at 7:45
