For instance, my Google account has a 32-character, random character password that I maintain with LastPass.
I regularly flash new ROMs on my phone or otherwise need to be able to manually type in my password. Not a big deal, but that password hasn't changed for quite some time now. I haven't memorized it, but that password is beginning to feel… familiar. And of course, the only secure password is the one you can't remember.
I'm wondering if this password, or any other passwords that have been in my LastPast vault, need occasional changing, even if the passwords have not been compromised. Something along the lines of the corporate "change-your-password-every-90-days" thing.