Unfortunately the problem is neither his laptop nor card
First of all the max speed you can attain with Three is 1.4 Mbps. I know the software displays a max 3.6Mbps but the local network is not enabled for this.
I was one of the early users of 3 (signed up when it was 40E a month) and was extremely happy with it. I regularly used to get download speeds of over 1Mbps regardless of the time of day and in locations as diverse as Ennistymon, Limerick, Carrigalin, Dublin. The service was faster than previous experience I have had with Eircom, NTL, Esat.
Since they dropped their price to 20E and cranked up their marketing campaign they have had a massive uptake of the service. Unfortunately their infrastructure cannot handle it. There are regular outages and the only time I find it usable without pulling my hair out is morning time. As the day goes on it gets slower and slower (as more people use it presumably). By the time you get to evening you have a service thats mostly slower than old dialup (which is what many of your tests are reflecting). If you have access to another broadband (as I have now) try switching between the 2 and you will see the difference.
I have been on to them and they are very aware there are problems but no real information was coming forward. I am considering trying to cancel my contract because as far as I am concerned I am paying 20E for non service which was not what I signed up to and what I saw in the trial 2 week period. I dont want to do this as switching is always a bit of a pain... I'd prefer if they sort their service out.
It would be great if somebody from 3 would reply here and enlighten us as to where the problem is... is it the radio interface... or a datacenter problem ... presumably everything is channeled through proxy servers .... or lack of dns servers (there s/w doesn't allow you specify your own) ... or is it the fact that because they have a download limit they have to presumably log the amount of each data in each request somewhere for later totalling...are they writing to a DB and cannot write fast enough at peak times due to lack of DB server capacity or poor sotfware (they rtt is very high in the above test)...
Come on, somebody from 3 tell us where the problem is !
Anyway, rant over, Paul.