That's referring to the entire printf line, so let's start there... For starters...
printf("<td align=center><a href=\"%s?id=%s\">%s<br>%s</a></td> ", $PHP_SELF, $myrow["image"], $myrow["username"]);
You only have 3 arguments defined, but 4 formats in the printf() function's string...
No prob about the bumping... Just an FYI, you generally won't get a favorable or quick response when you bump. Sometimes you can ask a question and get no response for sevaral hours... Just be patient. (And besides, as you already know, there are ways to "bump" your post without being obvious about it.)