This just in from the AP, by way of AOL:
[...] spacewalking repairs may be needed sometime after Discovery leaves this weekend. The problem is exasperated by the fact that a period of intense sunlight on the space station is fast approaching[...].
—"Astronauts take 3rd, final spacewalk; valve stuck, by Marcia Dunn, AP
(It may have been corrected by the time you see this, though. I saw it an hour or two after it was posted.)
I know, I know, people make mistakes all the time, and I generally see no need to call attention to them. I was just amused by this one.