Just a side note, Juridian if you did suffer a real break in and you needed to collect forensic evidence you would not pull the plug on your box. The power down could have undesired effects. You would disconnect from the network, note any running processes, and what may have been going on. Then when your local network guru or whomever you call for help arrives they can take the appropriate measures, i.e. complete disk to disk dump etc.

Just my spare change
AZE