I have noticed with the .275 update the faster research is not working. Yes, I realize others have stated this too.
Also I have found that it is easier (for faster unit creation #2, building creation #3, and research #4) to wait til your turn is over and before you click on Next Turn, to go into your city, and then use the 2,3, or 4 key, leave the city and then go back into your city.
FYI: Kaspersky Internet Security 2011 freaks out with this trainer and you cant manually set allowances for the trainer file. I'm working with them to fix this. Hueristically it thinks its a trojan.