As in summary.
Reproducible: Didn't try
Steps to Reproduce:
1. Turn saving statistics to files on
2. Rate unrated song to 4,5
3. Do full collection rescan
Rated song has rating of 4
Rated song having rating of 4,5
OS: Linux (i686) release 2.6.35-28-generic
*** Bug 273363 has been marked as a duplicate of this bug. ***
That's not a duplicate. Both are my reports and both are about different issues.
Still, both are probably caused by bug 211777
I also don't think that it's a duplicate as dbus is not used here.
But I just tried it, most of the half-ratings are really gone, but not all. I guess it's a problem with the back and forth conversion when storing the tags.
Will commit the fix for this today.