Thank you all for your elaborate input!
I was not aware that same amount of edges should be used, so far it always worked, pure luck I guess.
I am not using the beta yet, I must rely on solid software for my job, perhaps this beta is solid too, but I used to work in a SW development company who sent out beta versions and therefore I am a bit careful with that.
I will d/l the beta and give it a try. but I am still very happy with 2.5 though, it does the job!

wkr
wim