I have been happily using 12.04 since it became stable and had the support. It runs in a dual boot system besides Windows 7 (sorry for swearing) I only use Windows to be compatable with the work computer. I recently upgraded to 13.04 and looked forward to using this with some excitement, that was soon blown away in a spectacular way. This is not the nice clean Ubuntu I am used to, this to me has bloatware instantly installed, and I experienced problems from the very beginning. I like my privacy so no Facebook for me, I used Twitter occasionally with a different name and I use Blogger under another name, that is the limit of my social networking, I have tried it but some of the stupid posts I got alerts for soon put me off besides Facebook got to be horrible with that CEO making changes to just make money.
Anyway I have moved away from the subject somewhat. I love Tor Browser to give me that extra privacy, but after 5 hours of trying and searching on the net it would not load correctly. I also noticed that codecs seemed to be missing so I had to search them out to get certain items to play. I started the install at 6.45am (UK time), but by 4.45pm I had had enough. I know you can turn off suggestions made by Amazon, by why is it there in the first place? The Ubuntu music store should be an optional option to load, again it should not just be there. So at 4.45pm out came my 12.04 disk and I wiped 13.04 from my system. 24 hours later I have to say one the best decisions I have made.
I have loved Ubuntu from its concept and faithfully followed it, but 13.04, in my humble opinion, is the biggest piece of doggy do that I have installed on my computer for a very long time. I can only report what I find honestly and the fact that I reverted to 12.04 in 10 hours should speak volumes. I had all day to try it as I am currently off sick having thrown my back out badly, so this wasn't a quick look and delve into 13.04, but a full blown 10 hours. This time the developers have got it sooooo wrong, in fact I was so disappointed that I started to look at other versions of Linux available before reverting back to 12.04.
My personal advice is avoid this release as if its the plague and hope that the developers regain their commonsense and get their brains back in action and produce something worthy of replacing 12.04.