First of all, isn't it called SEN now and not PSN even more?
I have DSL 16K here, which provides me 1,6 MB/s downstream as maximum. There are cities around here, where people can have DSL 100K, which provides 12,5 MB/s downstream. This is the maximum in Germany for normal users. When I was in Poland, I saw an advertisement about an ISP there which provides DSL 350K and that for only 22,90€ per month.
I only download with roundabout 200 KB/s from PSN (earlier) via WLan, maybe it's because of the bad WLan adapter Wi-Fi 802.11b/g (Marvell 88W8580 - which is also the Bluetooth 2.0. adapter - and can't be running at the same time, so they run at a very fast frequency using time division multiplexing to make it possible. That's how it works on early models, up to CHECHL
.) or just because of the servers here in Germany.