Comment 25 for bug 745011

Nonsense. Ubuntu has limited resources and can't develop for and test every possible method for doing things.

Debian does not support upgrades from oldstable to testing, so you can't skip versions their either. The only difference is that since Debian has so many fewer versions the situation is less likely to come up.

People are certainly welcome to work on supporting alternate upgrade paths. The Kubuntu team did this for upgrades from 8.04 direct to 9.04/9.10 since the early KDE4 versions were spotty. That doesn't make it a general problem for all Ubuntu developers to worry about such corner cases.

If you want an unsupported use case to work, feel free to work on it, but you've no right to whine about others not doing it.