[RiK]

So if this is a university Mac then, how many other people are using it? If it's a public computer then surely you won't want to keep any personal data on there at all anyway?

The only thing I can suggest (which is purely theoretical as I've not tried it) would be that you perhaps each keep your own version of your OF database on a USB stick and use that when you're using the Mac. Not sure how that would work out for synching etc though.