Disc permissions repair

Question

Note: the item below is not a problem, just a curiosity item:
If I do an apparentl disc permissions repair, followed immediately by another disc permissions repair, why do I get items that need repair.  There are entries like the following:
Permissions repair complete
Repairing permissions for “Macintosh HD”
Permissions differ on "System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/jconsole.ja r", should be lrwxr-xr-x , they are lrw-r--r-- .
Repaired "System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/jconsole.ja r".
User differs on "System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/lib", should be 0, user is 95.
Repaired "System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/lib".
What is happening here?

Answer 1

As long as the report ends up with 'Permissions repair complete' then, as far as permissions go, you are fine. You can ignore the various statements in the report:
Permissions you can ignore on 10.5 and 10.6:
http://support.apple.com/kb/TS1448
Using 'should be -rw-r--r-- , they are lrw-r--r--' as an example, you will see the that the permissions are not changed, but the | indicates a different location. This is because an update to Leopard changed the location of a number of system components.
Poster rccharles has provided this description of what it all means:
drwxrwxrwx
d = directory
r = read
w = write
x = executeable program
drwxrwxrwx
|  |  |
|  |   all other users not in first two types
|  | 
|  group
| 
owner
a little more info
Before the user had read & write. A member of the group had read.
After, only the user had read & write.