Check this out:
Direct link to Nudge is here. Here’s info from its site:
This Contextual Menu “nudges” the Finder to update the information it displays about a file or folder. Use it on any item (or groups of items) if you suspect the Finder hasn’t updated its view. This should work for most attribute changes, icon changes, size changes, files that have been saved but don’t appear, and so forth. On Mac OS X 10.3 (Panther) and up, you can control-click on the empty space in any Finder window and have the contextual menu act on the containing folder.
It’s freeware, but $5 donations are welcome. Coolness. Apple should send him a rather large donation for providing a solution to one of their major Finder bugs…