I had all the same problems. I couldn't write them all though cos i can only use mt pulse atm.
Well, to some extent I agree. I quit using Ubuntu a few versions ago because I spent a week trying to get output to a second monitor to work in a 1440x900 resolution. A week of following every guide going and it STILL didn't work. Also, a subsequent dabble revealed that support of Broadcom wireless cards was dire in Ubuntu, again took a couple of days of command line action and it still didn't work properly. Installed Mandriva and it worked instantly.
However, I have a variety of laptops around in various stages of decrepitude and I am going to try the latest version of Ubuntu on one of them. I also have an Acer Aspire One which I am going to try and put Netbook Edition on although if that fails (or rather if the missus can't cope outside of a Windows environment) then I will use Win7.
You have to remember though that the only reason you don't have to think about them in Windows is you are so used to the environment. Give a non-computer user a Windows or Ubuntu system and I suspect they would have equal trouble with either. And at least Ubuntu is a safer playground for the computer illiterate.
I managed to break flash so I tried to reinstall it.. No joy so I removed it and tried to install it again.. Boom no more firefox.
A few more attempts and a tutorial I was following broke my ubuntu