Thanks guys.
This guy wasn't unexpected- he was in hospital the same time I was - in Feb 2009, came back to work for a while, but went off long term leave in November last year. But its really, really sad.

There may be something going on up here... but as a whole, our population is older than the average population, lots of OAPs, and much of the population is actually transplantees that have come from elsewhere in the UK and/EU.
Also, we're also a large employer, something like 4% of the population around here, works here... so it could just be one of those things...
We've had constant access to employee assistance and they've been passing out stuff on "death of a co-worker". Really horrible stuff.