[Rd] Installer package destroys permission settings on /Applcations (PR#7025)

[reitter at mle.media.mit.edu]

Full_Name: david Reitter
Version: 1.9.1
OS: Mac OS X 10.3
Submission from: (NULL) (18.85.44.174)


The installer package seems to change the permissions on the /Applications
folder (and probably on other folders as well), which means that a normal user
(that does not happen to have user id 501) cannot open the Applications folder
anymore. Both group and user are changed to id '501' (which doesn't exist on my
system). 501 is usually the first user on a system.
Also, it seems to change permissions of the root directory /.

Running Disk Utility ("repair permissions") helps in such a case -- provided you
are able to run Disk Utility without accessing your Applications folder (which
might be hard for the non-techie).
 
The libxml package that is included does the same kind of BS, but this time with
the less important /usr folder.

I could reproduce the problem by installing R again after I ran the system's
repair permissions script. 
I wonder if this is a general problem with Apple's installer.