When OSX loses its mind: passwords don’t work, internet dead, but Appletalk OK
Sometimes, OSX loses its mind. Let me explain.
Earlier today, I left my home network (turned off Airport, put machine to sleep), did some work on the train (no network), came into work and joined the Ethernet. I could join all the Appleshares there (on Appletalk). But the internet was dead. No DNS. Couldn’t ping anyone.
I called IT, who hadn’t (as I wrongly thought) banned non-listed machines. So it had to be a restart. My daughter’s login was still active, so I thought I’d log her out before doing a graceful restart.
No dice. Can bring up the login window, but the password I know to be correct doesn’t work. Nor can I log her out from my (admin) account - it says I’ve entered the wrong password.
I see this occasionally: basically, OSX gets a sort of senile dementia when it’s been up for too long. It doesn’t know you, has never heard of your password, and whatever you put into it is wrong.
Sometimes, it will tell you that you’re that well-known user “?????” - see this Activity Monitor picture: 
My question: what the hell is going on here? How does it happen? I’ve got unlockupd running - could that be a cause? I thought it just checked to see if lookupd is running. I’ve got updated 10.3 -> 10.4 on a Powerbook. Tons of RAM. I’ve got the Menu Extra Enabler and, now, thankfully, the Camino session Input Manager (which is marvellous: one day all browsers will have session retention as standard - probably Internet Explorer 9, in about 2015).
(Hmm, looks at Menu Extra Enabler. Now version 1.0.3. I have.. 1.0.1. Hmm, would that make the difference? Anyway, updated now. But if you’ve noticed something similar.. tell me. Or if you know of a filed bug, tell me. Put my mind at rest.)
- These posts might be related (the database thinks..):
- Don't think, just repeat it loudly (9 July 2004; score: 67.74%)
- When OSX loses its mind, pt 2: because lookupd has gone mad (3 January 2007; score: 59.09%)
- The internet? Just a fad, don't worry. Your job doesn't depend on it (30 September 2004; score: 36.56%)



