I'm not looking for any support but I thought I'd post to let you know about unexpected behavior from your 13.04 installer.
I recently installed 12.10 on my Asus Revo L. I partitioned 30 gigs to dedicate to Ubuntu. After mucking around I wanted to go ahead and install 13.04.
However the 13.04 installer wouldn't boot up, and after a while i found out i had to go into grub boot config file and set "nomodeset". Finally I was able to get into the installer.
The installer gave me some options: "Upgrade from 12.10 to 13.04" or "Erase 12.10 and install 13.04". I chose the latter. The installer then went on to repartition the entire hard drive, format it to Ubuntu, and install 13.04 in it. I lost my windows install, for which there is no backup (the system does not come with a restore disc or flash drive) and all my content. Over what? That never should have happened guys