I'd be interested to see how many people that are having problems are sticking to the three 'safe' repositories and aren't downloading random debs or following obscure instructions. Having said that, I have the extras-devel and extras-testing (added but disabled unless I want something specific) and I'm having no problems.

It reminds me of some people on Ubuntu forums actually - complaining that it's broken and that everyone said it should be better than Windows and - oh, so you enabled the root account and started following obscure instructions from forum threads?

It's still only an OS, and it's not idiot-proof. Oh, and if you're having a specific problem ask a specific question