Sitemeter has the last visit recorded to my site at 12:02:04am this morning. That's a bit odd, considering I usually see something like 800 visitors by now, and I have a half dozen comments this morning from as recently as 45 minutes ago.
Now, to figure out where the problem lies...
UPDATE: It appears that yesterday they migrated sitemeter to a new server cluster; which seems to be causing the problem. Now, when/what will the resolution be?