Hi,
and THERE you seem to have the problem! If laptop's network card is down, VM will run into trouble. Btw, is your laptop connected to a WLAN router? In case of bridged networking, please make sure that the router allowes connections from "new" MAC addresses (the one of the VM!).
Ah, and when ssh-ing into the vm, don't use the root account. Use oxidvm@ instead (root ssh login will spawn the VM frontend, also via SSH).