Pop rushing, how long does the unhappiness last?

[Akita51]

I've just started playing CIV3 (was an avid CIV2 player) and was wondering how bad the effects are from pop rushing, i.e. how long does the unhappiness last and how many people are made unhappy?

Thanks in advance for help!
Akita

[Blaupanzer]

20 turns per rush on one citizen each time. If you install the new 1.17f patch, then the unhappiness spreads to the remaining citizens, making the effect compounding. (1 rush = 1, 2 = 2, 3 = 3, etc. In the prior iteration, the citizen affected was specific, so he could be rushed out of existance or hit again (with no further affect).)

[Flight]

its 40 turns post patch.