Since I'm in the process of clearing a bunch of 'dust bunnies' from my system, here are a couple more that have me stumped. They are Finder anomalies I've been seeing for the longest time. Perhaps someone recognizes them, and—who knows—has a fix.
1. When in List view, any folder window with a vertical scroll bar occasionally will scroll suddenly to another part of the list when a subfolder's disclosure triangle is toggled open.
2. When in List view, changing the label of a number of Command-selected items in the list will frequently leave a single item unchanged.
This is seen on a G5 iMac (iSight) running Mac OS X 10.5.8. AFAIR, these anomalies have occurred since I purchased the iMac, which was running Tiger at the time.