You guys are really great. Thank your very much for your confirmation/solution and sorry that I forgotten to clean-up my configuration file before attaching it to my last message. I've never seen such an awsome support before.
@rellenberg: I will try your solution as soon as possible.
I've tested your hotfix and it really solves the problem. Many thanks for the solution. Well done.
If I had known that the problem also depends on the operation system version (of course I use the old kernel 2.6.32-122-rtai on my CNC computer) I should better told you so in my initial post - sorry. Thanks to dgarrett for finding out this important information.
In my opinion there might be an other way to solve this issue. G64 P0.1 is a function that blends your path and eliminates tight radius and corners. Maby fixing system is not so very neceserry.