Something wrong with password protecting the account?
not that I know of, you'll have to hide your pr0n another way. Why not put the files in a passworded archive? Name it 'Work' and jobs done!
Probabley a shared computer? With the nekked lady photos in a open folder on the C:\ drive?
I am sure there is software that can create an encryped partition on your disk that you need a password to access. I doubt it is free though.
Something wrong with password protecting the account?
It is, truecrypt.
It's incredibly easy to bypass, no encryption or anything like that.