42 min? What kind of system are you rendering this on? I'm finding that, unlike P4, P5 requires much higher system resources. I noticed your also using dynamic hair in this example. Dynamic hair can look good, but if your system isnt up to it, itll choke. Just as an example:

On the old machine (amd tbird 1.1ghz machine with 1.3gb sdram), P5 would run & render well until I added dynamic hair, then it would choke come render time (30min to an hour to render).

On my current machine (amd athlon XP 2000 with 1gb ddr ram), P5 runs great with dynamic hair, and large renders usually dont take longer that 15 min. (large renders example: Mil Dragon with dynamic hair (10,000 hairs) and full size texture map (4000x4000) rendered @ 3000x3000x600dpi, render time: 16min 30sec.)

Also, I noticed your using the long curly dynamic hair in your picture. This hair with default settings tends to tax the system more than the others during setup. At least on mine, thats because for some reason, the Show populated was left checked on the long_back section of the hair by default. (Took me a while to find that one. Couldnt figure out why it took longer to pose that hair.) You may also want to consider substituting that dynamic hair for the old styled hair, It looks just as good, and will drop your render time.

There are a lot a tricks one can do to speed up P5, try taking some time and play with the settings. Im willing to bet you can drop that render time down by half at least (if not more.)

Good luck!
~DM