Not in in 3 months or so. Like any other software in the current trend of fast develop/launch. After that, it will be a way more bug-free and performance-tuned that in there initial launch. I do always the same with programs, apps and games and it always save me a lot of problems.
I have installed Ubuntu Linux 4+ years ago, basically when its multimedia capabilities started to work in a fresh installation. I have never felt any necessity to come back to OS X/Windows since then.
I use Linux, I like it, but please stop to remember every day that Linux is the best and in a position of global leading.