wheel - 10:51 pm on Dec 28, 2010 (gmt 0)
I'm slightly confused (easily done) by what you're saying. Is it imortant or serious? In this instance of the ISP, it's meant to be an account area with https logon.
As Lammert notes, encryption still works fine no matter what your browser is complaining about.
I've never seen a certificate error that mattered, i.e. one where I didn't just ignore the error. The encryption matters, not the 'who owns the site'. It's the 'who owns the site' part that is such a load or nonsense.