I was actually talking about this part:
/* Use demi bold font weight for some key areas */
.codeheader, .quoteheader,
.expand_pages,
.table_head>th,
.topic_sorting_row>h3, .topic_name h4 a,
.poster .name,
.keyinfo h5 a, .keyinfo h5 a strong,
.ui-tabs .ui-tabs-nav .ui-state-active a, .ui-tabs .ui-tabs-nav .ui-state-active,
.ui-dialog .ui-dialog-titlebar,
.popup_heading {
font-weight: 600;
-webkit-font-smoothing: antialiased;
font-family: "Segoe UI Semibold", "Helvetica Neue Medium";
}
Just add "Helvetica Neue" as the third option as a fallback, since those two isn't recognized, at least for me. Also, that antialiasing thing might be better if only used for that part as well and not for the body tag. The site feels blurry otherwise.
The cache issue seems to be fixed, at least for now.