Well, it's 12:23 Linden time... and SOMETHING is seriously borked. There were less than 11,000 people on the last time I looked, but SL stopped responding. Logging off and attempting to log back on gives me a "could not resolve server address" error... and rebooting the computer hasn't helped, either.
My network connection is fine, as I can surf anywhere I want with the usual cable speeds, check email, etc. Just not connect to the SL server to log-in.