A few years ago, I was at a examining a wireless base station/router that kept crashing.
This turned out to be caused by a wireless TV transmitter that was used to get the TV signal to another room during some reconstruction.
That 802.11g wireless router consistently crashed after several minutes when the wireless TV transmitter was used. I haven't seen this happen on any other wireless router though.

Also, when the microwave was used, it jammed the wireless TV signal.

When you are an Australian OEM system builder and actually get one of these shirts, I bet it will arrive in shrink-wrap with a big EULA sticker on it that reads something like:

When accepting this EULA you agree to proudly wear this shirt to your work, to wash it daily using Microsoft(r) certified color washing powder (order no. X87-00640KB), agree not to remove or add any letters, numbers or graphics to change the text and/or graphics on this shirt and agree not to install Windows XP(tm) onto any OEM system again.