If I open Safari and go to www.google.com and type in a search the letter 'a' can't be typed. I have to press shift+a in order to type a capital letter a but can't type a lower case 'a'. I'm typing this message in Firefox so clearly the key on my keyboard is functioning correctly.
I can type lower case a in the url bar area but not in other text boxes. I can't type it on apple.stackexchange.com or on duckduckgo.com. No text areas on any website seem to let me type lower case a. However, it works fine when I use Firefox.
Any thoughts? I'm using OS X 10.10.4 and Safari 8.0.7.