RRD is not updating VPN statistics
The RRD graphs are not showing the number of connected VPN users.
In version "2.0-RC1 (i386) built on Fri Mar 18 21:32:32 EDT 2011" changes were made to store the data in environment variables. In one of these changes an extra & was added at the end of the line where the variable OVPN is set. This means that in the next line where the RRD is updated the variable is not set.
I've removed the & in /etc/inc/rrd.inc and now the graphs are updated correctly.