Sometimes it is useful to re-check folder permissions, for example, when you move a completed site to a production server, or if you change hosting.
How to check
If you don't delete the /install folder, you can check permissions by adding
or for 4.7+
after your base url.
Pre Umbraco 4.7
In umbraco 3 you get direct results, in umbraco 4 you must login first to display the results of the test.