I’ve just posted a reno of a site (http://www.pitchinforagoodcause.org.), but for reasons beyond my understanding, the first time you visit the site in Firefox the formatting is totally f’d up. If you clear the cache, the site is perfect.
There is a large fan base for this site and I’d hate for them to discover this ugliness and not know what to do about it.
The arguments for keeping the caching are good, but I think I need to remove it for a month or so to protect all the repeat visitors.