thumbnail database should be invalidated on file modification

[GoogleCodeExporter]

What steps will reproduce the problem?
(I was debugging defect 1 in the Tetris app when I found this.)
1. Go to a directory with at least two jpg files (I used the directory
/Applications/Tetris.app)
2. rename a jpg file to a new name (I renamed White.jpg to WhiteSquare.jpg).
3. rename that jpg back to its original name.
4. copy (I did this via ssh, as the "copy" button in the finder appears to
be for text and not files) a different jpg to the new name:
bash-3.2# cp GraySquare.jpg WhiteSquare.jpg

What is the expected output? What do you see instead?
The expected thumbnail for WhiteSquare.jpg should be the same as
GraySquare.jpg, but it's still the same as White.jpg

The unexpected behavior persisted through directory changes, and leaving
finder and returning.  The correct icon *did* appear after a reboot of the
phone.

What version of the product are you using? On what operating system?
1.6.5 on iPhone

Please provide any additional information below.

Original issue reported on code.google.com by john.s.h...@gmail.com on 17 Sep 2007 at 10:03

[GoogleCodeExporter]

Nice catch!  I noticed something like this, but thought that it was related to
something else.  I'll investigate

Original comment by matt.sto...@gmail.com on 18 Sep 2007 at 2:14

• Changed state: Started

[GoogleCodeExporter]

This is especially annoying when looking at SummerBoard themes. You have to
completely close finder to look at icons from another theme. My suggestion for 
fixing
this is to remove the thumbnail database stuff.

Original comment by runemast...@gmail.com on 21 Mar 2008 at 7:32