Thank you for your comments, I really like feedback to improve the way I'm writing.
After I read the article again today I noticed that it kinda sounds like I'm blaming Ubuntu. This is not the case. I'm thankfull for all the dev's spending their free time to develop open source software.
I regrouped the article a bit to split the Ubuntu and the application part better. Also I edited the conclusion a bit. The goal was not to rant about Ubuntu but to show switchers which problems I ran into and to share my experience.