03/22/2010: Ubuntu and RocketFish RF-FLBTAD bluetooth dongle
I bought the RocketFish RF-FLBTAD bluetooth dongle today. When it was plugged into the front USB ports of my computer, the dongle would not be recognized as an HCI device. However, when I plugged it into one of the USB ports in the back of my computer, it registered just fine. Lots of good messages in /var/log/syslog.
Update: The dongle disappeared when I rebooted. However, it came back when I manually ran:
sudo /etc/init.d/bluetooth restart
02/09/2010: Heroku Tip; Use a Ping or Uptime Service As a Cron Job.
This is a pass-along tip from Toby Hede (http://stackoverflow.com/users/14971/toby-hede) on StackOverflow. Just give the Ping service the URL of the controller doing the work instead of your root page.