Services getting killed (no replies)

Hi everyone,

After Bodhi helped me to install Debian on my pogoplug calssic i managed to install a few programs in my pogo to make it a serie downloader.

What i currently installed are: sickrage, transmission, samba and SABnzbd+.
The program i have is that sickrage and SABnzbd+ stops every now and then and i am not able to find out why.
Also SABnzbd+ has 20 services open and i only accepted 4 connections at a time.

My setup is als follow:
Pogoplug classic
USB stick 16gig sandisk for Debian
500gig hdd on usb for the download.
No swap on the usb stick of hdd.

I also attached 2 screenshots from htop. One with SABnzbd+ running and one without.
There is almost no memory left.
Is this setup to heavy for the pogoplug or do i need to change things so it will run smoother?
Sickrage doens't give any error's in the log file why it stopped.
I have read some site's on the internet they say that you don't have to make any swap if you use a USBstick, perhaps creating swap on the hdd is a good idea?

I was wondering if you guys could help me with this.