Wifi and keyboard/mouse problems

[juniperz]

I used XBian on my Pi a few months ago (XBian0.8) and was very impressed - it streamed video and music from my Synology NAS over wifi (Edimax EW-7811UN) and I could control it with a Logitech wireless keyboard and mouse with their USB "Unifying Receiver". No need for a powered hub - all just worked.

Today I decided to try XBian 1.0 Alpha 4 with the fancy Windows installer. It booted perfectly, but the keyboard and mouse wouldn't work. I took the receiver and mouse to a Windows PC - all worked fne. Rebooted the RPi - nothing.
Got a powered hub and wired keyboard & mouse - rebooted.
Input devices work - but no wifi shows up in the Network-Manager in Programs! That wasn't even there last time I used XBian...

So I am stuck - the wifi adapter used to work out-of-the-box (as did the Logitech stuff) and now nothing seems to. Have drivers that used to be in by default, been removed? I remember that when I first booted (today) with the Logitech USB receiver in place, the boot info that scrolls up the screen did include successful references to Logitech, so it was certainly recognised.

Any clues please? Thanks.