Sometimes when I unRAR a set of images, the files are inaccessible. Trying to view or move them result in "Access denied." Changing the files permissions the standard way (right click, properties, security, advanced, owner) doesn't make the files available.
The way I managed so far to solve this was by using a commercial program called "Delete FXP Files" that allows to "Take Ownership Of Selected Items". This solves the no-access problem, but that program only works file by file.
I'm looking for a program or a solution that can change the access rights of a whole bunch of files.
Ah, never mind, I found a solution: by unraring with 7z instead of winrar.
I'm glad I don't use windows XP...