WinXP IE render_text leak?

Was wondering if anyone could tell me why the following render_text line
seems to consume vast amounts of memory under IE.

render_text “<div id=“maptable”><div id=“container”
style=“position:absolute;top:0px;left:0px;width:100%;height:100%;opacity:.0;filter:alpha(opacity=0);-moz-opacity:0.0;cursor:hand;z-index:2000;”>”

I’m not completely sure but it seems related to the transparency bit.

Thanks,
John Cole