+1No where in your OP did you make a support request, all you did was rant.
I'm always amazed when users come here to complain about a new release, after failing to test said release. Just expecting their system to be fully compatible and functional with a new version. Why not try Xubuntu 13.04, I'm testing it on a Zareason mini with a dual core Intel processor (1.1gig) and 2 gigs of ram. It is a little slower than Xubuntu 12.04, but still quite snappy and after removing all the unnecessary notifications, etc. the performance did improved. Still not to the level of 12.04.
I don't recall reading anywhere that Canonical was trying to produce a Windows killer OS. I see all of Linux as a choice, should one be dissatisfied with a distro or version - there's certainly plenty of others to choose from. I'll never understand why a user would install a new version without testing and just assume their system (perhaps not even purchased specifically for Linux) will support the new release. Or, that the new release will meet their needs/expectations beyond what others report. I do find the ongoing excuses (especially regarding video) annoying after reading them for years. ATI, NVIDA, INTEL all at some point since my joining the forums, have been associated here with poor performance. I seriously doubt making excuses will improve a user's frustration and IMHO it only serves to impart failure.
If you truly wish to request support, I suggest you start a thread in the appropriate help section specifically for that purpose. One suggestion I'd make, is not to rant in a support request - but rather just note the issue. It's been my experience that the volunteers helping in those sections don't really wish to waste time reading a rant.
Just my $0.02