We have had a problem with our download server since we made an upgrade a few days ago. The server forget about the special Blackberry-build and served the regular Opera Mini build instead.
If you have installad Opera Mini on your Blackberry device the last three days and Opera Mini is painfully slow you probably did get the wrong version. In this case, please download the right version from http://mini.opera.com/bb
with your Blackberry-browser (not Opera Mini).
Sorry for the inconvinience!