.. +7vdc is just a transent pulse ...
Anyway, after reset button or normal reset from PC it does not reset
correctly like it does when power on or upload program. And the signal from osciloscope is different between those two cases.
Still the buggest problem is that WHY Arduiono goes on that kind of state. No I'm not bold enough to use %-operator in my code...
And for Mike: for some reason it works same way (= correct when reset happens to work) if there is 500000 or 500000L. You are right that it should have L, but seems to be ok without also. Still this is not the biggest point of the problem.