The usual reply to this tecchy issue, would be to suggest using another browser or offer us further information regarding which browser you use. What Win system are you on?
I've never experienced a freeze on this site or any site that I can recall.. and I'm using Firefox / Win 7.
The only issues I have with this site, are the long loading times for the main images. It's rare they actually load, because I've read or clicked what I needed, before they completed. This isn't a site fault as such however, simply my broadband isn't fast, living out in the villages. I likely get a 3mb/sec speed on a very good day (Today 2.26mb/s).