Reconnecting to network after losing signal

I've had this happen maybe once or twice on my MBP, too, no idea why. Definitely not actually a signal strength issue, since I'm not 20 feet from the base station and the signal strength is measureably fine. Otherwise perfect--I've put it to sleep probably 3-5 times a day for weeks and it reconnects almost instantly every time.

I also had an experience today, probably related, where it seemed to drop the connection although it didn't--it still showed full bars in the display, but I couldn't get any network access (including pinging other computers on the local network directly, or finding the base station in Airport Admin, though I was ostensibly connected to it). The actual 'net connection was fine, as my wife was on my tower at the time and had no issues (it's wired to the ABS), and when I turned AirPort off then back on on the 'Book, it kicked in and worked perfectly.

The MBPs use a new wireless adapter if I'm not mistaken, so perhaps there's a driver bug. I'll wait until 10.4.7 comes out to even start thinking about it in earnest, since right now we're talking a minor annoyance maybe once a week in my case, and I've been using the connection quite heavily (a LOT of VNC).

MacFixIt has an item up about kernel panics, possibly related to heavy traffic, on AirPort with MacBook Pros, but I've seen nothing of the sort so far. Maybe what we're seeing is realated to the same problematic driver.