By relaying DNS queries to local dnsmasq instances, debugging DNS servers in newer Ubuntu releases is no longer strictly file-based.
Justin Weissig created a really nice compilation of useful Tips and Tricks for Linux and IT in general: http://sysadmincasts.com/episode-guide
At least on Linux Mint Petra the mount of an SD card will not survive suspend mode.
You can query the Service Tag of Dell hardware quite easily:
I prepared a 3G Router with failover to the 3G WAN via USB Stick in case the main DSL Uplink fails. The router has no option to pass a PIN to the available Huawei E1550, even though the mode is supported in general.