Hi, thanks for the replies.
My first post was worded pretty badly and didn't provide much information, sorry.
I've tried pretty much all channels, landed on ch9 in the end, since that's in the clear from all the routers on 6, and there weren't that many on 10/11.
Landlord got us a Cisco RN1000 range booster today, it definately made the network alot more stable (am now getting -54 rssi compared to previous -79, noise floor for me is about -84dB.
However, still just getting about 5/5 in speed on tests (should be 30/5), tried on two computers, an ipad2 and an android phone. Since the download speeds are so bad, my googling indicated that network interference could be the culprit, especially when download speeds are taking a hit.
The router being used here is a Thomson 789 (isp provided el cheapo router), only capable of abg.
Most of our devices support 5ghz, and if we were to buy a new one, it would be one with Multiple In, Multiple Out capabilities to ensure compatability. I understand Cisco has a couple of those.
Am going to get my own router tomorrow (still moving in), is it likely that 802.11n give us increased speeds in our situation?