Flickr will be down for (at most) two hours this evening from 8 – 10 PM Pacific (find out what time this is where you are) while Yahoo! Network Operations upgrades our switches. Our "Flickr is having a massage" message may or may not be visible during this time, though any photos blogged beyond the Flickrverse will be available. UPDATE: 10:11 PM, we’re synchronizing the Tuna Blastrs now. We’ll be