It loaded just fine for me on a 56K (at 42k) dialup and fractional T1... but something tells me it isn't the same now as it was at 4:30 PM. All I see is a link list on the left, with "Page is Under Maintenance..." message on each of the pages.
I believe comments don't slow page load time, because the HTML process doesn't scan the entire line of comments. It sees the beginning of the comment, and then looks for the end of the comment...
I don't think it affects load time too much with php comments either...
(The code still gets outputted, sure, but text just doesn't cause too much of a problem ever...)