Okay, I failed to use both tools to do subversion stats I found - SubStats crash somewhere around 1000th revision (out of almost 10000 we currently have), MPY SVN STATS crashed even sooner. We're not that big project! Is there something else what can I use? I'd welcome any ideas.
Otherwise I will probably try to debug SubStats sometimes, but I lack time for that right now.
Just for record: I didn't use remotely overloaded SourceForge SVN server what was cause of my first problems, I did setup own server using SVN data from them. Only change it did made is that error appeared sonned and my computer had lot of work to do for about an hour.