Odd Windows problem

[laissez-faire]

For some reason on my father's computer every folder on the hard disk seems to become read-only. For example My Documents has become 'Read-Only' and unchecking the read only box is only a short term fix as it immediately becomes read-only again. Has anyone else heard of this?

 

[ns400r]

Normal for it to look like that, can't remember why though.