Hi,
the latest beta 3 works fine on my MacMini i5! I use 3 monitors.
1x Thunderbolt (Mini Display Port - to - DVI)
1x HDMI to DVI (included in the MacMini package)
1x IOGear USB TO DVI 1080p Link:
http://www.iogear.com/product/GUC2020DW6/
Thank you DisplayLink
Everything works fine! Start, Restart, Sleep :P great!