Iam using the lesterchan.net plugin to show the recent users on my site.
Now i noticed i sometimes get errors. For example in the usersonline.php file:
Warning: gethostbyaddr(): Address is not a valid IPv4 or IPv6 address in /www/name/public_html/wp-useronline.php on line 59
While everything works as it should be.
More important is an frequent error on the frontpage that says something about:
'duplicate id 1'.
Probably caused if iam online with more computers at the same time (with the same ip address).
Anyone has a clue what the problem might be?