wiggle command ignores posterizeTime in AE CS4

Hi, for some reason the wiggle command is ignoring completely the posterizeTime command.

For example, I'm trying to wiggle rotation using:

posterizeTime(2);

wiggle(1,45)

but it still returns a wiggle value on each frame.

I made an aep file example with the correspondent render result here.

Please, what I'm missing out?

I'm on a iMac Intel 2.16GHz, System 10.5.6 with AE CS4 9.0.1.51

Thx in advance!