From my subjective experience, it looks as though someone has deduced how to sneak past Akismet’s fences. I’ve seen a (subjectively measured) increase in the number of comments I’ve had to discard recently; this doesn’t include the items that Askismet captures (~30,000 for one of my blogs— thanks, folx). What seems to be happening is that more spam entries are not being caught.
I don’t doubt that folks will get through Mr. Bush’s international fences; we US folx should simply give up on our politicians’ efforts to block things (that they shouldn’t probably block in the first place). But, I’m trusting WP to handle this (if it is real). Akismet is good.