Sorry for being upfront, but you're a douche.
If an OS update cripples the performance of an application that you run, regardless of its nature, you have every right to be upset and complain on a public forum. You're both consumers and you both pay good money for an OS that can run the apps that you want to run, reliably.
Mate, that come back was totally inappropriate and I am highly offended by the insult that you have just given me.
I completely disagree with you on every level with everything you just said. For an extreme example, go and look at the stability/performance/compatibility of Microsoft vista.
I will be reporting you for your pathetic reply.