*always* reply to the mailing list, please.
Dear Axel
It is late in Germany and I am not authorized to install anything on this
5.20pm is not late. it is *early* for any decent hacker. same time
here in italy, btw, and i am just warming up. 
desktop. On Monday I will inform the IT guys about the gdb debugger. I will
are you sure it is not already installed? typically, if you have
compilers installed, the debugger is pre-selected to be installed.
anyway, i ran your input with the two problematic lines activated for
10000 steps under the valgrind memory checker and no issue as well.