sorry forget to name my spec. 

xubuntu 7.10 amd64

and check out the native openvpn connection log, it lacks of the part of adding new route definitions.

Wed Apr  9 10:30:12 2008 IMPORTANT: OpenVPN's default port number is now 1194, based on an official port number assignment by IANA.  OpenVPN 2.0-beta16 and earlier used 5000 as the default port.
Wed Apr  9 10:30:12 2008 LZO compression initialized
Wed Apr  9 10:30:12 2008 Control Channel MTU parms [ L:1558 D:138 EF:38 EB:0 ET:0 EL:0 ]
Wed Apr  9 10:30:12 2008 Data Channel MTU parms [ L:1558 D:1450 EF:58 EB:135 ET:0 EL:0 AF:3/1 ]
Wed Apr  9 10:30:12 2008 Local Options hash (VER=V4): '22188c5b'
Wed Apr  9 10:30:12 2008 Expected Remote Options hash (VER=V4): 'a8f55717'
Wed Apr  9 10:30:12 2008 UDPv4 link local: [undef]
Wed Apr  9 10:30:12 2008 UDPv4 link remote: 129.69.90.133:1194
Wed Apr  9 10:30:12 2008 TLS: Initial packet from 129.69.90.133:1194, sid=54baea99 96dfaa2f
Wed Apr  9 10:30:12 2008 VERIFY OK: depth=1, /C=DE/ST=BW/L=Stuttgart/O=Universitaet_Stuttgart/OU<email address hidden>
Wed Apr  9 10:30:12 2008 VERIFY OK: nsCertType=SERVER
Wed Apr  9 10:30:12 2008 VERIFY OK: depth=0, /C=DE/ST=BW/O=Universitaet_Stuttgart/OU<email address hidden>
Wed Apr  9 10:30:12 2008 Data Channel Encrypt: Cipher 'AES-256-CBC' initialized with 256 bit key
Wed Apr  9 10:30:12 2008 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Wed Apr  9 10:30:12 2008 Data Channel Decrypt: Cipher 'AES-256-CBC' initialized with 256 bit key
Wed Apr  9 10:30:12 2008 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Wed Apr  9 10:30:12 2008 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 2048 bit RSA
Wed Apr  9 10:30:12 2008 [openvpn.rus.uni-stuttgart.de] Peer Connection Initiated with 129.69.90.133:1194
Wed Apr  9 10:30:13 2008 SENT CONTROL [openvpn.rus.uni-stuttgart.de]: 'PUSH_REQUEST' (status=1)
Wed Apr  9 10:30:13 2008 PUSH: Received control message: 'PUSH_REPLY,route 129.69.244.1,ping 10,ping-restart 120,redirect-gateway def1,echo +-------------- important notes --------------+,echo |,echo | - this box will be used to deliver,echo |   important notes to you,echo |,echo +----------------- sincerely your vpn-admin --+,ifconfig 129.69.245.138 129.69.245.137'
Wed Apr  9 10:30:13 2008 ECHO:+-------------- important notes --------------+
Wed Apr  9 10:30:13 2008 ECHO:|
Wed Apr  9 10:30:13 2008 ECHO:| - this box will be used to deliver
Wed Apr  9 10:30:13 2008 ECHO:| important notes to you
Wed Apr  9 10:30:13 2008 ECHO:|
Wed Apr  9 10:30:13 2008 ECHO:+----------------- sincerely your vpn-admin --+
Wed Apr  9 10:30:13 2008 OPTIONS IMPORT: timers and/or timeouts modified
Wed Apr  9 10:30:13 2008 OPTIONS IMPORT: --ifconfig/up options modified
Wed Apr  9 10:30:13 2008 OPTIONS IMPORT: route options modified
Wed Apr  9 10:30:13 2008 TUN/TAP device tun0 opened
Wed Apr  9 10:30:13 2008 ifconfig tun0 129.69.245.138 pointopoint 129.69.245.137 mtu 1500
Wed Apr  9 10:30:13 2008 route add -net 129.69.90.133 netmask 255.255.255.255 gw 192.168.1.1
Wed Apr  9 10:30:13 2008 route add -net 0.0.0.0 netmask 128.0.0.0 gw 129.69.245.137
Wed Apr  9 10:30:13 2008 route add -net 128.0.0.0 netmask 128.0.0.0 gw 129.69.245.137
Wed Apr  9 10:30:13 2008 route add -net 129.69.244.1 netmask 255.255.255.255 gw 129.69.245.137
Wed Apr  9 10:30:13 2008 Initialization Sequence Completed