Scienceblogs is experiencing some technical difficulties right now: the guts of the machine are being very recalcitrant and generating time-out errors all over the place. Please be patient and heed the message when making comments: getting an error when posting does not necessarily mean the comment did not get posted. Most often, it just means that the MovableType software has gotten very, very stupid.
And if you think you’re having problems with comments, you can’t imagine how bad it is for us trying to post articles. I just tried to create a new entry, and went off to a doctor’s appointment while waiting for the window to open.