Similar story. It started as a tidied up Debian fork. Then since about 12.04 LTS it turned into a tidied up Debian unstable fork with all the bugs in it. As a server only and LTS only user, I had no end of problems from there on with unstable kernels, duff and buggy packages, update roulette and terrible support.

We're on Debian 7 now and it's rock solid, relatively bug free in comparison and the support is good. Just where I want it to be.

The best outcome for me was that it caused Debian to rethink their release cycles a bit.