Nobody has ever succeeded in squashing RDS bugs, though. Maybe it's a black art. We certainly put a lot of effort into it for 2.0 are were incredibly disappointed that it was still broken.

Just thinking... Is it possible that RDS is being used differently in different countries? Here in Italy I notice that all radio stations want to use RDS, still none seems to be using them properly or fairly. You get traffic info rds signal that makes your cd player stop and switch to the radio, and all you get is commercials. Also, we have a real chaos concerning frequencires. Same frequencies being used by different stations as you move just few km, rds clocks never properly set, and so on. I would not be surprised if the alternate frequency list is poorly compiled/updated.
As a matter of fact, however, the empeg is the only radio unit I had that switches stations randomly, so I guess besides RDS mess we have here, something else must be brocken. My father's Golf (brand new), which I am driving in these days, has the standard basic radio/casset player VWs come with, and the RDS seems to be working decently...