Funny Text in Posts: < ="">

Has anyone else run into this? I've had a few users who always get this text: < =""> put into the end of their posts. I looked at the source and there's a bunch of extra stuff in their post:

<!-- Message body -->

Yay!!!! I'm so glad for you,&nbsp; Kat!&nbsp;<img src="smileys/smiley1.gif" border="0"> God is good!<br>
<br>
<!--
var SymReal&#079;nLoad;
var SymReal;

 Sym()
{
  window.open = SymWinOpen;
  if(SymReal != null)
     SymReal();
}

 Sym&#079;nLoad()
{
  if(SymReal&#079;nLoad != null)
     SymReal&#079;nLoad();
  window.open = SymRealWinOpen;
  SymReal = window.;
  window. = Sym;
}

SymReal&#079;nLoad = window.&#111;nload;
window.&#111;nload = Sym&#079;nLoad;

//--><span style="color: rgb(0, 102, 0);">*Ditto
Hobbit pushes back her large, empty bowl with a contented sigh.&nbsp;
Every single flavor of ice cream was delicious, and she feels it was
just enough.&nbsp; She feels a bit sorry for Kazad-dum, who didn't seem
to enjoy his malt at first.&nbsp; Still, he finished it with a smile,
and whether that was because he liked it after all or was trying to not
upset Nennare, Ditto Hobbit admires his cheeriness.&nbsp; She thanks
Nennare and walks outside.&nbsp; Passing the new bakery, she catches
lovely aromas coming forth, and determines to be one of the first to
sample it's treats.*</span>  <br>
<br>
< ="">
<!--
var SymReal&#079;nLoad;
var SymReal;

 Sym()
{
  window.open = SymWinOpen;
  if(SymReal != null)
     SymReal();
}

 Sym&#079;nLoad()
{
  if(SymReal&#079;nLoad != null)
     SymReal&#079;nLoad();
  window.open = SymRealWinOpen;
  SymReal = window.;
  window. = Sym;
}

SymReal&#079;nLoad = window.&#111;nload;
window.&#111;nload = Sym&#079;nLoad;

//-->

-It's not that big of a deal but very curious - any ideas anyone?