Tim Cooke wrote:No idea. Why don't you ask them?
That is the first thing I would do.
Apart from that, you can also check if somebody manually installed Ubuntu (then it has to be asking user id and password) or is it OEM installation (in which case, it would say something like 'it is first time you've started the computer and now is time to configure user id and password').
Once logged in, you can also check system up time and previous boot occurrences(if any).
Regards,
Anayonkar Shivalkar (SCJP, SCWCD, OCMJD, OCEEJBD)