ADSL Lite packages unclear
I had the same problem with ISP's this month. But one thing to keep in mind is that most of them simply resell ADSL packages. I'm with Afrihost and they moved all their uncapped users to IS Lite accounts. That's where these crappy packages originate from. They are to be blamed. The resellers don't control when uncapped users must be capped.
IS is basically offering 5Gb per 10 day window, so that's 15Gb per month. Going outside this, they claim that they will half your line speed, but then comes that 20% window which is so easy to hit. To give you an idea how bad it is in there, I have a 384kbps account capable of basically 40KB/s. When you hit that 20% threshold, all traffic gets throttled down to 4.5KB/s, which is more similar to a 56kbps dial-up modem.
The problem with this model is that nobody wants to hit the 20% threshold, so you either leave or use less. Eventually even downloading 1Gb a month could get you in the 20% of those who remain, and so forth. But there was that article out recently talking about phasing out uncapped :wtf:
What these ISP's are guilty of is that they didn't fully disclose everything the Lite package entails, and quite frankly even that spills over to fault of IS

mad

. I spent a lot of time on this with Afrihost. After many emails they finally sent me everything they have about the IS lite package, which was the actual material sent to them from IS. I read it and it didn't say how much you would be throttled hitting the 20%. And you cannot check whether your account falls into that bracket either. But at least I can contribute by stating the extent to which it is throttled.
So, OpenWeb offers this Lite package and Standard uncapped, which is similarly priced. The difference is Lite is unshaped on all ports, except that you are 'capped' to 5Gb per 10 days, and must fall within the 80% of users not downloading 'too much'

. For Standard uncapped, you will be shaped on everything involving downloading (don't know the rate on this. Anyone?), but no 20% Fair-use policy is applicable, so the speed you get, you will always get (bar any network issues).
I hope ISP's / IS will fully disclose these packages soon, especially when migrating users without fully informing them (as in my case with Afrihost, which I now cancelled).