I'm not sure if this is actually thinkpad centric but when i'm on wireless (home, or anywhere else) when the link quality is low there's a two tone beep, low then high. This seems to happen atleast every 5 minutes. The strange thing is that I only noticed this after switching from 2.4.x to 2.6.x kernels. T40p Debian testing/unstable -- Darian Schramm darian.schramm at gmail dot com