Does the web interface load at all?
Each camera has an SSH daemon that can be enabled, but it's not on by default. Chances are, the shell on the camera may not be very functional as well if the web interface also fails to load.
If you do manage to get in via SSH, check 'top' to see if the hydra process is pegging the cameras. If so, then check your firmware version, as you've likely hit a bug (we've seen this in the past ourselves).
Best of luck.
Scott Olsen
Solutions Specialist
Bulletproof Solutions Inc.
Web: www.bulletproofsi.com