Empyting the Trash Can will delete the files from disk, but sometimes they
are still shown in the file view tab. Pressing F5 to reload the folder will finally
make the icons finally disappear.
It can be reproduced often on slower external storage mediums.
Expected behavior is that icons disappear as the files are deleted on disk.
Tested on pcmanfm 1.1.2 and git HEAD on Lubuntu 13.04 / i386