Lets try to fix the fonts. First install unity tweak tool.
Open the app, click on the fonts icon and change to your hearts content. I find if you put the fonts on the left side as 10pt, and the ones on the right side as 11pt, it makes for a nice, crisp look.
sudo apt-get install unity-tweak-tool
Also, adding the libfreetype ppa and updating your computer with it makes them look even better.
Don't worry, dist upgrade gives you the latest 13.04 packages, it dosen't upgrade to 13.10 like it suggests in the command.
sudo add-apt-repository ppa:teppic74/freetype-latest && sudo apt-get update && sudo apt-get dist-upgrade