I have a new 930L. Over the weekend i got it working just fine (wired and wifi), but the mydlink registration wouldn't work (at the last step in the OS X registration wizard, the form wouldn't submit to create the account).
Support today had me 1) upgrade the firmware to 1.09 (from 1.02) and reset the camera; registration via the wizard then worked.
However, now wireless access stopped working. I have it set up the same as before (trying both DHCP and a static IP). The correct SSID is set in the "basic wireless settings" and the WPA2 access settings are correct in both the camera and router settings. The Site Survey button shows my network and I've selected it that way, too.
The moment the Ethernet cable is unplugged, the camera's LED goes red and stays that way. My router's setup page initially shows the camera as "Wireless" and "Active" but changes to "Inactive" after a minute or so; I cannot connect to it via a browser. The moment it's plugged in again, it's all fine.
Resetting the camera and starting from scratch does nothing.
(Side note: when registering with support on the line, my wireless network didn't show in the wizard, so they had me set things up via Ethernet. I didn't go through wireless setup with them on the line, since it had worked just fine before and I thought I could get it back on my own.)