Well not exactly. The template posticonbit says:

<input type="radio" name="iconid" value="$iconid" $iconchecked>&nbsp;&nbsp;<img src="$iconpath" height="15" width="15" align="abscenter" alt="$alttext">

My guess would be that something needs to be set for $iconchecked. Like if it's a new topic/reply icon01 is automatically selected.

Seeing how I don't know a single thing about PHP, I can't do this.

*goes to stalk ed*