In reply to Paul Phillips - UKC and UKH:
I'm with Paul on all accounts, mine has been great too.
Throughout the winter it can also fit in a large number of bouldering mats (if that's what you're into) and throughout the summer I have generally left my Boot Jump in-situ and made the most of camping in it each weekend. Space-wise there's enough room for everything, plus a bit more - including a comfortable space for passengers too.
Not sure about any of the engine details/faults that have been listed here, but my 2006 1.6HDi has been extremely reliable. Just got it MOT'd and it passed with flying colours, services have also been cheap (at least they have to date!), and I can't think of a single moan or gripe about it's performance. I also do quite high mileage due to a blend of work and a need to travel, so bearing that in mind it's doing well.
In short: I quite clearly love it...