I have my TN7 only since a few days. I haven't even activated GPS before i got the 2.3 OTA-update.
I activated it first in my car, so with plenty of satellite-signals. I used the app "GPS Status" to test it and i got a position in i think less than a minute.
Kinda glad that i can say "what's all the fuzz about!?" about that
Edit: I actually do not know what kind of TN7 i have ... the sticker on the packaging only says "GENERIC Tegra Note with Adapter". It might be a Xolo one, since i have a Xolo-Care-Center installed.