i have been a SkyDSL customer since last december when i moved into house (near dijon spot 21 green i belive) which the letting agency assured me had internet access, it turns out, it doesn't and satalite internet was my only solution (3/4G contracts in France never exceed 8Gb per month, which is ridiculous for a desktop PC). i pay for the 6Mb unlimited data plan and have only ever seen speeds above 500kb/s during ungodly (i have young children) hours 3am to 7am during feeding times.
i have been disappointed since the start, speeds have been appalling, except for the few times i stayed up past 2am, and the few times i got up at 6am, occasionally it is usable during the daytime, but what use is that for a person who works all week.
my average monthly data usage for both me and my geek wife is around 5Gb, it would be higher, but it we can't bleed any more octets out of the modem in the time we have available, we spend what seems like eternity waiting for each page load.
my LAN setup is a Netgear WRN1000v3 and cat5e cable to the PCs, i have tried connecting the PC direct to the modem (although what sort of terrible advice is that anyway) to eliminate problems with the router, but no change. from my PC to the RaspberryPi NAS i can regularly reach speeds of 10MB/s through the 100Mb router.
is there anything i can do with regards to diagnosing my connection before i unleash fury at the ISP for suggesting i upgrade my subscription.

Rx Power: -35.9dBm
Rx SNR: 12.1dB
ODU Telemetry status Active
Cable Resistance0.5Ohm
Cable Attenuation7.6 dB