Occasionally your Pandorabot might reply with the message "HTTP error ...". This happens when the request to pandorabots.com times out. If you see this error, open a browser and go to http://pandorabots.com to verify that the site is up. If the site is down then check back later, hopefully service will be restored shortly. If the site is up, verify that you can chat with the default Pandorabot there by visiting http://pandorabots.com/pandora/talk?botid=85173fb54e344b2d and entering any text in the "Tell Ana" field.
If pandorabots.com is down or otherwise unavailable then the AI chat facility will be disabled. The Pandorabot will still be able to query Wikipedia, greet new arrivals, deliver notecards & landmarks, and all other functions. It will just reply with "HTTP error ..." when attempting to access pandorabots.com.