Recent days I observe unpleasant behavior of SE website. At submitting of answer or comment it says "an error happens ...". Also including images make the some problems. In all cases the second try is successful (yet). I also observe, that after this sometimes the question and answer disappear for while (about 10 minutes) from list of top questions.
Does anyone experienced this? To whom I should report this problems? It seems that meta-TeX is not right place to report such website technical issues.