I've made a few phonecalls to Apple about my Mac mini's Airport which, though it finds my WLAN and connects correctly on startup, disconnects from my network after some random period (up to about 12 hours...) and fails to reconnect by itself. Today after a lot of waiting while the operator spoke to different people I was told that my issue was introduced by 10.4.8 (go figure, that's when it got broken) and that no fix was available. I was told to reinstall OS X in order to update back to 10.4.7 via the Apple website. Does it not strike you as bizarre that it's not possible to just roll back the Airport update in some sort of automated way? I mean come on, I'm not totally thick, it's not necessary to reinstall and entire OS just to resolve an intermittent WLAN problem. Anyway, I guess I'll just wait for them to release 10.4.9... or Leopard... For anyone interested it's one of the very first Intel Mac mini's, Intel Core Duo 1.66GHz, fully spec'd. I'd also like to strongly urge anyone experiencing similar Airport problems since 10.4.8 to report them to Apple.