(root@kjell httpd)# grep 38.144.36.16 access_log* | wc -l

   6524

This is a bad dog, within 3 days requested 6.5 k pages, very often the same page just a couple of seconds later.

The useragent (s)he/it is using is

 (compatible; MSIE 5.12; Mac_PowerPC)

Either way, (s)he cant read this posting anymore:

iptables -I INPUT -s 38.144.36.16 -j DROP

Could find much about this online, but via dejagoolegroups I found that it seems to be a very stupid aggresive bot. Something like the main computer in i robot