Yes, it's absolutely turned off.

I missed your new reply and edited my previous message with: "And isn't working anymore...

wtf. I'll play with it."
So I'm screwed again.
Lucky, the client log was still there and this is what causes the fix:
Code:
Mon Feb 13 12:20:07 2012 *Tunnelblick process-network-changes: ServerAddresses changed from
<array> {
0 : 192.168.1.1
}
to (pre-VPN)
<array> {
0 : 10.214.1.6
1 : 10.214.1.7
2 : 10.214.2.10
3 : 10.214.2.11
}
Mon Feb 13 12:20:07 2012 *Tunnelblick process-network-changes: SearchDomains changed from
<array> {
0 : openvpn
}
to (pre-VPN)
Mon Feb 13 12:20:07 2012 *Tunnelblick process-network-changes: DomainName changed from
openvpn
to (pre-VPN)
x-college.intern
Exacly what you expect when setting the network settings like in the image. But, now it's not working anymore.
So, this for sure is a client side problem. Let's see what I can do otherwise I guess I'll need to head to the Tunnelblick forums.
Topic at Tunnelblick opened. I'll keep you up to date. Let me know when you have an idea.