Error: Out Of Range Value Adjusted For Column??

$picid = $_GET['picid'];

$commentby= $_REQUEST['commentby'];
$commentby= filter_text($commentby);
$commentby= mysql_real_escape_string($commentby);
$comment= $_REQUEST['comment'];
$comment= filter_text($comment);
$comment= mysql_real_escape_string($comment);
$action = $_REQUEST['action'];

if($action == 'post_comment'){
$insert_comment = "INSERT INTO comments ( picid, comment, commentdate, commentby) VALUES ('".$picid."', '".$comment."', CURRENT_TIMESTAMP, '".$commentby."')";


if (!mysql_query($insert_comment))
{
die('Error: ' . mysql_error());
}
header("Location: ");
}




returns-
Error: Out of range value adjusted for column 'picid' at row 1

picid is of int datatype :/