I don't see any database errors cropping up and I run 1,000+ users online at a time.
Another issue I noticed, the region percentage don't add up. In looking at psistats.php there are two lines:
Code:
$total_count = fetch_sum($getcountries);
and
Code:
$total_count += $country['count'];
It appears that double counting is going on - if I comment out the second line, then the percentages in the regions appear correct.