Today there was a problem with the network at work, I got the question mark occasionally and it was on and off if I could see anything through the browser. The rss feed occasionally worked though. Checked with a laptop w/wi-fi, it also had problems. Walked to another building, no wi-fi problems. Sysadm suggested I should cycle the power on all wi-fi AP's I could find on my way back to the office.. did that, problem solved. :-)