jQuery Forum

<div dir="ltr">It would help to see a specific example, or link to an example.  My immediate response would be to make sure you can select each group individually, by wrapping it with a div or something and selecting the div, not all the radio buttons at once.  that way you can handle each group one at a time and append the message one at a time as well.
eg
<div class="myRadioGroup">
<input />
<input />
..etc
<p class='MyRadioGroupMessage'>

</div>
<div class="myRadioGroup">
<input />
<input />
..etc
<p class='MyRadioGroupMessage'>

</div>
//select all the 'groups'
$('div.myRadioGroups').each(fucntion(){
    //make sure at least one is selected
    if( ! $('input:radio:selected', this).length > 0){
      //write a message
      $('p.message', this).text("Please select at least one!");
    }
});
Thatcher