I was just doing an upgrade and noticed the file permissions were mostly wrong....

Unarchiving (644) /home/.../colorchart.jpg
Unarchiving (755) /home/.../fileman.css
Unarchiving (755) /home/.../fileman.js
Unarchiving (755) /home/.../1pixel.gif
Unarchiving (755) /home/.../back.gif
Unarchiving (755) /home/.../binary.gif
Unarchiving (755) /home/../close.gif


.....any ideas why?