I've always been able to post comments about columns on WaPo. Scrolling past the column brings up a part of the page that says "posting as username". The name is correct. Previously, I'd see a little circling "working" icon and then a box to enter my comment would open and I could also see comments that others have made. Now, nothing happens. I cleared my cache the other day, and the problem seems to be since then. Comments work fine in Chrome, but I like Firefox better. Ideas?