Dedoimedo posted a review on Ubuntu 13.04 Raring Ringtail 64-bit

The hunting season begins with a review of Ubuntu 13.04 Raring Ringtail 64-bit edition, covering live session, installation in a quadruple-boot setup on a laptop with SSD and Intel graphics, and post-install testing and usage, including look & feel, new file manager, Samba sharing, privacy options and offensive Dash search results, small changes in the installer flow, like partition labels, user setup and keyboard configuration, desktop customization, applications choice, multimedia playback - Flash and MP3, printing, stability, suspend & resume, good improvements in CPU and memory resource usage, and many annoyances like download glitches, screenshot utility bugs, input methods complexity, poor relevance of online searches, slow visual rendering of objects, and more.

  Ubuntu 13.04 Raring Ringtail - Remarkably unremarkable