If it's not a cleverly made mock, it looks like it could be the much fabled x86 version of Mac OS X
that Apple have apparently been working on just in case they ever completely lose their share
of the computer hardware market, and have to start supporting x86 based PC architechture!
Then again, I could be absolutely, totally and utterly, completely wrong with that theory . . . !
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (DJGM-i.net)
SeaMonkey = Swiss Army Knife: It's versatile, reliable, and contains useful tools.
Windows Internet Explorer = Old Swiss Cheese: Full of holes, and it stinks!