For funsies, here's how my entire rounded corners segment is coded. This includes the above, the profile images to the left, the unread comment count to the right AND the read comment count to the right (I think some folks missed that last string). Feel free to point out anything that could use tweaking!

/* ROUNDED CORNERS */
/* ROUNDED CORNERS */

/* rounded corners on floating unopened plurks */
._lc_ .plurk_cnt { border-radius: 9px 9px 9px 9px; -khtml-border-radius: 9px; -webkit-border-radius: 9px; }

/* rounded corners on open plurk dropdowns */
._lc_ .info_box, ._lc_ .response_box {
border:0px;
border-radius:50%;
border-radius:9px 9px;
}

#form_holder {
border:0px;
border-radius:50%;
border-radius:9px 9px;
}

/* rounded corners on profile images beside plurks */
.p_img {
border:0px!important;
}
.p_img img {
border:0px;
border-radius:50%;
border-radius:5px 5px;
}

/* rounded corners on response counts beside plurks */
.new .response_count, .response_count {border-radius:6px;}

/* END ROUNDED CORNERS */
/* END ROUNDED CORNERS */