After updating to 10.4.6, Safari tells me that I'm not connected to the internet, even though I have full airport signal and I know I'm online. After a while of fiddling with the diagnostics (not changing anything just going through it) I'm able to get on. This happens after a restart and if it has been asleep for a while. Just so you know, I use WPA-PSK [TKIP] security settings and I have a Netgear WPN824 router. Before the update, I was online as soon as my MacBook was up.