Comment # 4 on bug 1204829 from Freek de Kruijf

(In reply to Matej Cepl from comment #3)
> I am sorry, but unless I have some kind of reproducer of the problem then I
> cannot do anything.
> 
> Please, reopen with some way how to reproduce the problem without your
> program.
> 
> Thank you

With a newer version of 3.6.15, namely 3.6.15-150300.10.37.2 the problem is
gone.