A couple of bugs have surfaced in 1.4.0, including a problem with --verb 0 under Linux 2.4 and a trivial compile problem for OpenBSD.
I'd like to release 1.4.1 soon, which resolves both of these issues. Please test this release candidate if possible. Download: http://openvpn.sourceforge.net/beta/openvpn-1.4.0.3.tar.gz ChangeLog: * Modified the Linux 2.4 TUN/TAP open code to fall back to the 2.2 TUN/TAP interface if the open or ioctl fails. * Fixed bug when --verb is set to 0 and non-fatal socket errors occur, causing 100% CPU utilization. Occurs on platorms where EXTENDED_SOCKET_ERROR_CAPABILITY is defined, such as Linux 2.4. * Fixed typo in tun.c that was preventing OpenBSD build. James