Digital Satellite Receiver Problem (after factory reset)

fluppet

My apartment building has satellite dishes pointing at Hotbird and Nilesat. I set-up my digital satellite receiver as the building manager told me to, and it worked fine, but I had a feeling that I was not getting all the Hotbird channels I should, so I did a factory reset and started scanning the channels again, but this time I didn't get all of the channels that I used to have on either Nilesat or Hotbird (reception of both is perfect... I'm in the UAE). For example before the factory reset I used to get BBC World on Nilesat, but I don't get it anymore. It does scan the correct frequency/polarization/etc. when doing the scan, but it doesn't pick-up anything. If I manually go to where BBC World should be, it shows that it is not picking-up any signal, even though it was working perfectly before the factory reset, and I have set all the setting back exactly as they were before.
Another strange thing is that even transponders that it does pick-up channels on, sometimes they are not the channels that should be on that transponder according to the websites on the internet (both on the official site of the satellites, and on unofficial lists).
To make things even stranger, I am getting some channels on Hotbird that should be encrypted, eg. all of the Eurosport channels, even though I only have a FTA receiver, and I usen't to get these channels before the factory reset. (and by 'getting', I mean I can watch them perfectly)

Does anyone have any ideas?
I have tried playing around with all the LNB settings, etc., but nothing seems to work.
Why do I get some channels, but not all, even though I used to get them before? Why am I getting channels that should be encrypted?

The most likely situation to me seems to be that doing the factory reset somehow messed-up the receiver's tuner. How likely is that?

Thanks!

Hareesh

Quite Strange which is ur STB?

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fluppet

It's a Global 2052 PLUS.

I've actually just heard from someone that Eurosport is actually unencrypted at the moment, so that explains that part of the mystery