I think this is just an issue with Akismet. As of this morning, I click on the button to Delete Spam Permanently, and all I get is a blank screen. I have 121 spam messages to delete.
When I try to go to the Plugin tab from Dashboard, I also get a blank screen. I have not changed any settings or added any plugins in the last week (my last update was the Akismet update and the ComicPress update).