I use Ubuntu 10.04 and I see, that every time when I start it enables Wireless Connectivity.
I know, that there is a topic about it on Ubuntu forums, but I think I will get old before I get an answer there (if there is one).
I would like to disable it by default, but to have possibility to enable or disable it later.
UPD: I'm looking how to disable Wireless adapter. Something like Fn + ... in Windows, but in windows it remembers the last state. In Ubuntu wireless adapter is always enabled at startup.
Re-UPD: Picture with what I'm talking about:
When I press Fn + F2 it disables those diodes and Wireless + Bluetooth.