I have a 13" MacBook Pro purchased October 2009 and a 13" MacBook purchased in August 2006. The MacBook Pro is Model 5,5. Card Type: AirPort Extreme (0x14E4, 0x8D) Firmware Version: Broadcom BCM43xx 1.0 (22.214.171.124) Originally came with 10.5 Leopard, upgraded with $9.95 disc to Snow Leopard, now up to 10.6.2. I will occasionally experience an issue when connected to the internet where the airport icon will indicate I'm connected, but Safari and Chrome will refuse to load webpages. I have to click to turn Airport off, then back on. Sometimes it works, and other times I have to restart. The MacBook is Model 1,1 Card Type: AirPort Extreme (0x168C, 0x86) Firmware Version: Atheros 5424: 126.96.36.199 With this, sometimes the issue is the same as the MacBook Pro, but other times it will show the icon as being completely disconnected. A reboot fixes this. Laptop worked just fine under Tiger 10.4.11, is not running 10.6.2 via Archive and install to Leopard and subsequent Archive and Install from 10.6 (retail upgrade package for Tiger owners). Does anyone have any insight as to what might be causing this?