Hi all
If someone's got 5 spare minutes and an Ubuntu box, could you do me a favour please?
I'm trying to arrange for several VMs to be able to see each other which apparently requires the creation of a network bridge.   This is so easy in XP it's almost untrue but in Ubuntu, I'm a bit lost.   There's a very helpful tutorial at [1] but I'm afraid I'm doing something wrong because all this does is switch off the networking on the host (no web, no ftp, not even a ping is possible) - not quite sure how but the only way I can bring it back up is to restart.   I can't see what I'm doing wrong but it would help if someone else could try it and let me know where I'm going wrong.   
Cheers
Rob
[1] 
https://help.ubuntu.com/community/VirtualBox#head-ac88c03223e773c78dbb46b4b13c109de1143a03