Fan control -- faulty model? [Latitude D610]

Question:
Fan control -- faulty model? [Latitude D610]
Hello,
I am just wondering whether I've bought faulty notebook. I tried to change fan speed manually (Gi8kfan + patch) and there is no problem with fan #1. However I cannot do anything with fan #2. It works only at some default speed and even with increased temperature it doesn't speed up.
I have bought my D610 in December -- is it possible that Dell changed some internal API or something like this?
I would greatly appreciate if other D610 owners have sent some info if they have similar problems. Thanks in advance.
bye :-)
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