It's the "Agile" development methodology. Bung it out on the market as quickly as possible and fix any problems as you go along. The "Waterfall" approach was much better, but development could take years.
Unfortunately, it's the same all over now. I bought a Draytek 2767 back in April. It's now up to its eighth iteration of the firmware and there are still basic bugs galore. For example, you click on the link to register the device with Draytek and you just get "Page does not exist".
(For anyone else that has one, there was a firmware update to 5.4.0.2 a week ago on the Draytek international site. The first one I've seen flagged as "Critical security update. Update immediately". A week later, the UK site is still offering 5.4.0.1 as the latest update. Not impressed).
It's not just BT, unfortunately.
