Godfuckindammit.
Two days ago, I changed all my passwords to long 1Password-generated ones. After finally having done a clean ML installation yesterday, I began to reinstall all applications and log in with the new passwords.
At some point the keyboard focus switched to Chrome's address bar and I didn't notice, so I accidentally entered my master password at Google. Being kinda paranoid about stuff like this, I immediately changed it. The old one's easy to remember, and I changed it just slightly.. but when I continued reinstalling apps after a long, stressful day, I realized I had forgotten the new master password. I tried dozens of possible ones and a lot of combinations, to no avail.
Password cracker is running since 20 hours, will continue doing so for three days. Laugh at me, I deserve it.