Anyone else getting AirPort weirdness after the latest update? My menu bar AirPort indicator is all over the map: it switches between grayed-out and connected (all bars) every few seconds. If I start downloading a big file (I'm using the MobileMe quicktime tour as a test file), the indicator stays connected, but when network activity dies down, it starts fluctuating again or stays grayed-out until I load a webpage or some such. In the course of downloading the MobileMe movie, I'm seeing regular dramatic slowdowns in transfer rate: not to 0kbps, but to about 500kbps (as opposed to the consistent 7000kbps I get with this test download normally). I've attached a picture to show what I mean. The last time this happened, a rouge app was spamming the Console logs, but that isn't the case now. I first noticed this problem today, after installing the AirPort update... coincidence? I just booted a 10.5.4 backup and the connection is solid and works fine, so it's not the router's fault. Any idea what could be the problem?