Unfortunately no one can be told what fun_plug is - you have to see it for yourself.
You are not logged in.
When I configured my dns-323 with 2 1-TB disks in a RAID1 config, it automatically created a 512MB swap partition on each disk for a total of 1GB swap.
However, when I ran 'free', I was surprised to find that none of the swap area was being 'used' whereas in my Linux experience, the kernel always seems to use large amounts of swap even when nothing is running. So, it made me wondering whether swap is even working properly.
Specifically, 'free' returns the following:
total used free shared buffers
Mem: 61948 60084 1864 0 17308
Swap: 1060208 0 1060208
Total: 1122156 60084 1062072
Offline
Yes. Try running something very memmory intensive and you will see it get used.
Offline