Thanks for the fast reply, Tobias.
Unfortunately, that way doesn't seem to help. I'm not even using the Java libraries on pages with table, they are not the problem (well, problem is a rather big word for a tenth or two of a second).
My problem are these elements
These little images are loaded on the front page (with no tables) and no special Java library enabled for the front end.
Again, it's not only you're plugin behaving that way (as you can see here: http://tools.pingdom.com/default.asp?url=http%3a%2f%2fsmmp.de%2f&id=4692965).
Perhaps a sprite would do some good or an
is_singular() instead of a global head or footer injection. Just an idea. I know as much about writing plugins as about Chinese poetry.