Well the update bug has hit Flickr. They made some updates to the system on Friday evening and the databases are having some problems catching up. The site is quite slow, if the pages load at all.
Seeing hiccups or site slowness: Back up They say it is back up, but people are still having problems with their pages.
I have been having some problems using Flickr with Flock. It looks like there is some problems with the two interacting Firefox and IE work fine, but Flock has problems. I have reported this as a problem.