If we are sure that a bug is not reproduceable any more, put it here.
bug #154733 - Not reproducable in Dolphin 2.1 (KDE SC 4.9.2). It appears to have been fixed in KDE SC 4.6. Bryan C. (talk)
bug #160157 - According to comments this was fixed since at least 4.5.2. I can confirm that it isn't an issue in 4.9.2. Another problem that was brought up in the comments ("intersecting tags") does exist. Does this need it's own report? Bryan C. (talk)