just to double check the value in the db, lets change:
<option value="ACT" <?php if (!(strcmp("ACT", (isset($_GET['valid'])?ValidatedField("usersUpdate","UserState"):$row_W ADAusers['UserState'])))) {echo "selected=\"selected\"";} ?>>Australian Capital Territory</option>
to:
<option value="ACT" <?php if (!(strcmp("ACT", (isset($_GET['valid'])?ValidatedField("usersUpdate","UserState"):$row_W ADAusers['UserState'])))) {echo "selected=\"selected\"";} ?>>Australian Capital Territory|<?php echo $row_WADAusers['UserState']; ?></option>
if you could provide a link where i could see the issue, that would help as well.