Yet again my Omega continues to amaze with me it's spectacular ways in which to break and fail. Todays failure is no different.

Having replaced all the discs, pads and handbrake shoes, yesterday was the first time that I had driven the car for any distance, (or at least I did before it developed a missfire).
Anyway, above 10mph or so I noticed a rattle coming from the near-side rear corner. It sounded like a tick-tick-tick-tick-tick-tick, that got faster the quicker I drove. When I came to a stop, the ticking stopped also.
I assumed that one of the dam retaining pins / springs / caps had fallen off the handbrake shoe, and it was this that was rattling around inside the 'drum' part of the rear disc.
So, wheel off, caliper off and disc off and all seemed fine, much to my suprise, untill I noticed that it was dripping brake fluid. The problem is pictured below;

Even though I thought that the brake line was well clear of the suspension arm it seems that it has been rubbing against it, and over the space of 25-30 miles it has worn right through it.
Yeah! more expense

is this some sort of common Omega design fault? Or should I be ensuring that the brake lines aren't just clear of other componants, but very, very, very well clear?