Over the past few weeks, my laptop has randomly turned off a few times. No warning, just off. The only thing I see in any logs around the time has been lookupd failing. But, not sure if that is the cause. Just *poof* off. Doesn't happen on any specific application, and I've trimmed down to the bare-bones stuff (Adium, FireFox and Terminal). So far (knock on wood) it's not daily, and has been a few days apart each time.

Also, oddly, when I reboot, Airport can't find my default, home, network. But, it's in the dropdown of networks. I have to turn the Airport off, then on, and it auto connects as it should on restart. The system.log shows, during startup, that it can't find the password for my network in the Keychain (it's there, I see it). I think this started at the same time when the power-down issue started.

It happened again yesterday, so I called up Apple (still have AppleCare). I was on the phone with them for over 2 hours, and 2 different people. Tried this, tried that but no real solution. Problem is, I can't make the power-off thing happen on command. But, can obviously reproduce the not-finding-my-network thing.

The people at Apple are very helpful. They have their, what seems, set of "let's try this" stuff. One thing I didn't like, is every time I said "This is what I see in the logs...." they seemed to not care much. The 2nd person seemed to think the power-down was maybe a power supply issue. Frankly, I don't. I saw somewhere about a similar issue where lookupd may cause a sudden power-down, and I have seen some lookupd errors. But, she didn't want to explore that. And, she couldn't solve the Airport issue. When I said "I see this related error in the logs..." it didn't deter her plan for moving some folder and just trying to restart. At the end, she just wanted me to backup and re-install OS X (which I don't care much to do).

Hopefully, maybe something we did corrected the power-down issue. I can live with the other issue if I need to. But, if it powers down again.. it's off to Apple for them to fix it.