Version: (using KDE KDE 3.5.4)
Installed from: Ubuntu Packages
this bug is a very little one, but I think it isn't too difficult to fix it...
Changing the rating of a track during this track is just playing, since last SVN the context sidebar is updated immediately. Unfortunately, the OSD seems to use older information about the rating (the ones that were the current when the track started) and not the new ones.
Suggestion for fixing this bug: Call the function to read the metainfos and the rating every time the OSD is shown OR somehow modify the information the OSD shows at the beginning every time the rating is changed (btw: this already works changing other metainfo, e.g. the title).
*** This bug has been marked as a duplicate of 125612 ***