Gmail https
Just read somewhere that Gmail now has an option to always access gmail via https rather than http. Oddly enough I was after that the other day, and now they’ve done, so its entirely possible they read my mind. It’s a good thing because it keeps your email more secure. It will potentially make mobile GMail stop working, but worth a check anyway.
HTTPS, look. see.
If you use better gmail extension for firefox or the google extension they have the options to force gmail and other google things (i.e. reader etc) to https.