Looks like it has been happening on this guys blog too… Running WordPress…
http://classiclinespottery.com/blog/
This is the same manner it has been happening on mine, even some of the links in his are the same as the ones I saw.
I just had the same problem and if you have access directly to the server console, through ssh or telnet, I just did ‘chmod 771 www/ -R’ and the -R recursively adds the correct permission.
