Is this RxKinetics.com? It seems to work fine for me (with Firefox 2). From your Home Page I click on various links on the left column and even though they're .html files, they load fine. Have you tried clearing your browser cache? If that works, ask your customers to try it too.
Yes, rxkinetics.com. Thank you, I was in a panic. Earlier today it wasn't loading in Safari on mac either, throwing "Forbidden" errors, but now it is loading in Safari. And, although it was loading in IE, my PHP footers weren't showing. I'm guessing file/folder permissions weren't set correctly after the server maintenance. I'll try clearing the firefox cache on my PC, thanks so much for the advice.