Annoying autocomplete bug fixed!
It's amazing sometimes how the little things about a program can really bug you. For me, this was bug 78270, "Order autocomplete by frequency, NOT alphabetically"
This one (now fixed as of yesterdays build) really bugged me because if I were to say accidentally type "mozillazine.com" instead of ".org", the next time I started typing mozillazine in the URL, the first option on the list would have been mozillazine.com! Even though I've only been there once before, and accidentially at that.