error after updating to freeradius 2.0.1

Hi

After i found out today that Freeradius 2.0.1 was out i updated my old 1.1.7
release and installed this version. Problem is, that it won't start.
I keep getting:

ERROR: Failed to open socket:
/etc/freeradius/radiusd.conf[182]: Error binding to port for 0.0.0.0 port
1812

All 1.1.x versions have run smoothly on my Ubuntu server, this is the first
time I get this problem.
Does anyone know how to fix this?

Thanks in advance!
Joep Ruiter