I wrote last year how the Nokia Communicator E90 telephone had no ability to permanently accept an untrusted (e.g. self-signed) certificate when picking up e-mail over SSL. This omission required the user to go through the rigmarole of setting up a certificate authority (CA) with which to sign the certificate, thereby vouching for its credibility.
Well, I upgraded the firmware of my E90 a couple of days ago from version 7.40.1.2 to 210.34.75 (don't ask me about the change in version number schemes).
This update doesn't appear to do very much, apart from improve Flash functionality in the Web browser. However, one small yet significant improvement that has probably gone unnoticed by most other users is that it's now possible to permanently accept an untrusted certificate, without having to go through the bother of becoming a CA to vouch for it.
It's a small change, but significant to a few people like me.