About yesterday's weirdness

[tigertoy]

Same symptoms this morning as last night -- I was apparently logged in but no pages other than the login page itself recognized this.  Same behavior from my phone browser, so I don't think my computer is the problem, but I used the default Windows solution -- if it doesn't work and you don't know why, try rebooting.  I rebooted the computer and the phone and connected with my backup (dialup) connection, LJ was fine, so I connected through the phone and everything now seems to be working normally.  I sure hope this is a one-off, but if anyone could actually explain it, that would be helpful.