I don't think there's any speed limits but there must be some connection issues. Personally there are a few times of the day when speeds are good for me (300kb/s, which is the most my dsl connection can do) but most of the time I get between 20 and 70 kb/s on both ftp and http downloads. I haven't had good speeds at all times of the day for weeks.
I live in Europe too but that should be no excuse for these poor speeds, I download at 300kb/s from most other north american servers.
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