Quickly checked it in IE6 and the planeshift.it version does look misaligned. Both versions look fine in Firefox. Version at karyuu.com looks fine in IE6.
The only immediate text difference appears to be with karyuu.com version showing:
Mac OSX Client ( 250 Mb):
and planeshift.it version showing:
Mac OSX Client ( 246.585 KB):
Could be a messed up .CSS, .HTML or a combination of both.