Apparently, i'm not the only one that get higher speeds in DSM's own download station than in SABnzbd. Check this link (and scroll down to "Downloading": http://kevin.vanzonneveld.net/techblog/article/optimize_your_synology_for_downloading/
EDIT4; really, read through the link above, its useful info on how to get the best dl speeds out of your NAS. According to that blog, SABnzbd DOES take up more and more PCU and memory the higher download rate you go. He has the same problem as me.
EDIT1: Theres also a new version of SAB out, that can be downloaded from the official page. that claims it should run anywhere where python is installed. Mwby I'll try to install that and set it up.
I still dont get why some packages are specifically made for a respective CPU snd some packages (like marty's) is all-in-one. I mean there should be SOMETHING to gain by installing a package streamlined for your own CPU, right? Maby like, things like...memory and cpu usage?
EDIT2: I finally got the Helper running, when I installed and tried out google Chrome browser. Saying what you will about the Helper, its helpful setting the folders where you can actually see them :
So now i might try out merty's SAB for a while, then try to upload to the new version from the official page. Or find an updated version specifically for my CPU, or marvell kirkwood CPU's in general even, that can run on the python package I already have installed and doesn't complain about it.
EDIT AGAIN (3):
Ah, here's the info concerning the error msg when trying to install the latest python release:http://synoblog.superzebulon.org/2011/09/python-2-6-6-4-spk/
I just might upgrade to that, and install the SAB version for my CPU anyway, disregarding the error msg when you try to start superzebulon's python, and let it be "offline", as I understand it have to be...
I'll post here if I get any better speeds and/or smaller CPU usage when SAB is downloading when I've tried different versions of python and SABnzbd.