Radio back on the air!
Hooray! After being offline for a few hours I've got it sorted! We're now back on the air again. The problem was a faulty modem, and I took my bike in the dark cold night (it's literally freezing mind you!) and pedalled to my office where I "stole" (we had a few DSL-modems lying around really) an old modem we had sitting in the attic. It wasn't ours and not the people who rented before us either. So it's probably pretty ancient, but at least it works!
So I am happy to announce that we're back on the air again after the most fearful moments of Rivendell's existence this year ;)